Guided By Voices has an immense collection coming out soon, called "Suitcase 2: American Superdream Wow." The tracks of this one (I haven't seen the titles of "Suitcase 1," containing tracks 1-100) are all attributed to fake bands. Here's the listing I found:
Disc One:
101 The Plague: "This Ream"
102 Terror of Living: "Rocket Head"
103 Ragged Enzymes: "The Golden Pickle"
104 Hey John, Bees: "Your Charming Proposal"
105 Wim Dials: "Searing Tonight"
106 Billy Ray Human: "Somewhere Sometime"
107 Milko Waif: "If You Think It's Easy"
108 Wig Stomper: "His Spacetruck Is Strange"
109 Child Of Joe: "Tin Can Laughter"
110 7 Feet of Sunshine: "Sacred Space"
111 Bore Co: "Soul Flyers"
112 Throne: "Gods of Richard"
113 Scott Joy: "It's Only Up to You"
114 Ax: "Dancing With the Answers"
115 Devron Zones: "Waiting for Your Touch"
116 Milko Waif: "Soggy Beavers"
117 The Bug-Eyes Mums: "Invisible Train to Earth"
119 Karma Yeah: "Something For Susan in the Shadows"
120 Heavy River: "Sinister Infrared Halo"
121 Herkimer Mohawk: "Happy at the Drag Strip"
122 Apes in the Window: "Arms"
123 Yummy Ropes: "Solid Gold Animal Collection"
124 Some Are Bullets in Dreams: "Beach Towers"
125 Bleep Bleep F*ck: "Cosmic Clown"
Disc Two:
126 Timid Virus: "I Am Decided"
127 Mutts UK: "Tainted Angels With Butter Knives"
128 Brainbow: "What About the Rock?"
129 Scott Joy: "Pack of Rolling Papers"
130 The One Too Many: "Telephone Town"
131 The Pukes: "Hey, I Know Your Old Lady"
132 Dale Frescamo: "Headache Revolution"
133 Stumpy in the Ocean: "Every Man"
134 Milko Waif: "Alibible"
135 Ben Zing: "I Can't Help but Noticing"
136 Red Faced Rats: "Mannequin's Complaint"
137 U B Hitler: "Zarkoff's Coming"
138 Acid Ranch: "Supersonic Love Funky Love Gun"
139 The Bad Babies: "Perch Warble"
140 Scott Joy: "You're Not the Queen Anymore"
141 Throne: "Ivanhoe"
142 Herkimer Mohawk: "How Can You?"
143 Shoot'em: "The Lodger Carried A Gun"
144 Modular Dance Units: "Metro XVI"
145 Milko Waif: "My Dream Making Machine"
146 Usually To Death: "Mustard Man"
147 Wheels Pig Harvey: "Alone in Time"
148 The Plexigrall Bee-Hive: "Dusty Bushworms"
149 Wheels Pig Harvey: "Free It"
150 Christopher Lightship: "Are You Faster?"
Disc Three:
151 The Fake Organisms: "A Proud and Booming Industry"
152 We Too Bark: "Two or Three Songs"
153 Milko Waif: "Little Games"
154 Ax: "Daughter of the Gold Rush"
155 Leon Lemans: "Color Coat Drawing"
156 Silent Knife: "Learning to Burn"
157 Howling Wolf Orchestra: "A Minute Before the Evil Street"
158 The Needmores: "I'd Choose You"
159 Wavo: "You're Killin' Me"
160 Lectricaroo: "Old Friend"
161 Devron Zones: "She Don't Shit (No Golden Bricks for Me)"
162 Milko Waif: "I Have a Hard Heart"
163 The One Too Many: "Shoddy Clothes"
164 The Plague: "Sordid Forest"
165 The Needmores: "Shake It Out"
166 The Accidental Texas Who: "Cowboy Zoo"
167 Peter Built Bombs: "Soul Barn"
168 Modular Dance Units: "Phase IV (Rise of the Ants)"
169 Burial Wind: "Piece"
170 Sucko: "Lonely Town"
171 Wavo: "Do Be"
172 Academy of Crowsfeet: "Boston Spaceships"
173 Scott Joy: "Drugs & Eggs"
174 Stumpy in the Ocean: "That Ain't No Good"
175 Alvin Haisles: "Immediate Frozen Lookalikes"
Disc Four:
176 7 Feet of Sunshine: "Madroom Assistance"
177 Praying Man Vs. Bo Diddley: "Man of Dimension"
178 Alvin Haisles: "Nerve Gas"
179 The Fun Punk 5: "Do the Ball"
180 Peter Built Bombs: "The Issue Presents Itself"
181 The Banana Show: "Leprechaun Catfish Fighter"
182 Leon Lemans: "Child"
183 Howling Wolf Orchestra: "Invisible Exercise"
184 Carl Goffin: "All Around the World"
185 Alvin Haisles: "Late Night Scamerica"
186 Stumpy in the Ocean: "A World of My Own"
187 Milko Waif: "She's the One"
188 7 Dog 3: "Daddy's in the State Pen"
189 The One Too Many: "Cox Municipal Airport Song"
190 Gene Autrey's Psychic: "Scare Me No. 3"
191 Manimal: "Grope"
192 God's Little Lightning Bolt: "Heavy Crown"
193 Wim Dials: "So Roll Me Over"
194 The Inbrids: "Home by Ten"
195 Milko Waif: "Come Make My Shadow"
196 The One Too Many: "Paper Girl"
197 Yummy Ropes: "Jimmy's Einstein Poster"
198 Hot Skin Apartment: "My Only Confection"
199 Otim Grimes: "Groundwork"
200 The Fun Punk Song 5: "Bye Bye Song"
Disc One:
101 The Plague: "This Ream"
102 Terror of Living: "Rocket Head"
103 Ragged Enzymes: "The Golden Pickle"
104 Hey John, Bees: "Your Charming Proposal"
105 Wim Dials: "Searing Tonight"
106 Billy Ray Human: "Somewhere Sometime"
107 Milko Waif: "If You Think It's Easy"
108 Wig Stomper: "His Spacetruck Is Strange"
109 Child Of Joe: "Tin Can Laughter"
110 7 Feet of Sunshine: "Sacred Space"
111 Bore Co: "Soul Flyers"
112 Throne: "Gods of Richard"
113 Scott Joy: "It's Only Up to You"
114 Ax: "Dancing With the Answers"
115 Devron Zones: "Waiting for Your Touch"
116 Milko Waif: "Soggy Beavers"
117 The Bug-Eyes Mums: "Invisible Train to Earth"
119 Karma Yeah: "Something For Susan in the Shadows"
120 Heavy River: "Sinister Infrared Halo"
121 Herkimer Mohawk: "Happy at the Drag Strip"
122 Apes in the Window: "Arms"
123 Yummy Ropes: "Solid Gold Animal Collection"
124 Some Are Bullets in Dreams: "Beach Towers"
125 Bleep Bleep F*ck: "Cosmic Clown"
Disc Two:
126 Timid Virus: "I Am Decided"
127 Mutts UK: "Tainted Angels With Butter Knives"
128 Brainbow: "What About the Rock?"
129 Scott Joy: "Pack of Rolling Papers"
130 The One Too Many: "Telephone Town"
131 The Pukes: "Hey, I Know Your Old Lady"
132 Dale Frescamo: "Headache Revolution"
133 Stumpy in the Ocean: "Every Man"
134 Milko Waif: "Alibible"
135 Ben Zing: "I Can't Help but Noticing"
136 Red Faced Rats: "Mannequin's Complaint"
137 U B Hitler: "Zarkoff's Coming"
138 Acid Ranch: "Supersonic Love Funky Love Gun"
139 The Bad Babies: "Perch Warble"
140 Scott Joy: "You're Not the Queen Anymore"
141 Throne: "Ivanhoe"
142 Herkimer Mohawk: "How Can You?"
143 Shoot'em: "The Lodger Carried A Gun"
144 Modular Dance Units: "Metro XVI"
145 Milko Waif: "My Dream Making Machine"
146 Usually To Death: "Mustard Man"
147 Wheels Pig Harvey: "Alone in Time"
148 The Plexigrall Bee-Hive: "Dusty Bushworms"
149 Wheels Pig Harvey: "Free It"
150 Christopher Lightship: "Are You Faster?"
Disc Three:
151 The Fake Organisms: "A Proud and Booming Industry"
152 We Too Bark: "Two or Three Songs"
153 Milko Waif: "Little Games"
154 Ax: "Daughter of the Gold Rush"
155 Leon Lemans: "Color Coat Drawing"
156 Silent Knife: "Learning to Burn"
157 Howling Wolf Orchestra: "A Minute Before the Evil Street"
158 The Needmores: "I'd Choose You"
159 Wavo: "You're Killin' Me"
160 Lectricaroo: "Old Friend"
161 Devron Zones: "She Don't Shit (No Golden Bricks for Me)"
162 Milko Waif: "I Have a Hard Heart"
163 The One Too Many: "Shoddy Clothes"
164 The Plague: "Sordid Forest"
165 The Needmores: "Shake It Out"
166 The Accidental Texas Who: "Cowboy Zoo"
167 Peter Built Bombs: "Soul Barn"
168 Modular Dance Units: "Phase IV (Rise of the Ants)"
169 Burial Wind: "Piece"
170 Sucko: "Lonely Town"
171 Wavo: "Do Be"
172 Academy of Crowsfeet: "Boston Spaceships"
173 Scott Joy: "Drugs & Eggs"
174 Stumpy in the Ocean: "That Ain't No Good"
175 Alvin Haisles: "Immediate Frozen Lookalikes"
Disc Four:
176 7 Feet of Sunshine: "Madroom Assistance"
177 Praying Man Vs. Bo Diddley: "Man of Dimension"
178 Alvin Haisles: "Nerve Gas"
179 The Fun Punk 5: "Do the Ball"
180 Peter Built Bombs: "The Issue Presents Itself"
181 The Banana Show: "Leprechaun Catfish Fighter"
182 Leon Lemans: "Child"
183 Howling Wolf Orchestra: "Invisible Exercise"
184 Carl Goffin: "All Around the World"
185 Alvin Haisles: "Late Night Scamerica"
186 Stumpy in the Ocean: "A World of My Own"
187 Milko Waif: "She's the One"
188 7 Dog 3: "Daddy's in the State Pen"
189 The One Too Many: "Cox Municipal Airport Song"
190 Gene Autrey's Psychic: "Scare Me No. 3"
191 Manimal: "Grope"
192 God's Little Lightning Bolt: "Heavy Crown"
193 Wim Dials: "So Roll Me Over"
194 The Inbrids: "Home by Ten"
195 Milko Waif: "Come Make My Shadow"
196 The One Too Many: "Paper Girl"
197 Yummy Ropes: "Jimmy's Einstein Poster"
198 Hot Skin Apartment: "My Only Confection"
199 Otim Grimes: "Groundwork"
200 The Fun Punk Song 5: "Bye Bye Song"