Concert you regret missing most?

manifesto wrote:
when I was in high school I had scored pretty decent seats to the Bowie Glass Spider tour
Ended up giving them to my sister and her boyfriend.  They said it was fun, but mostly talked about the parking and high beer prices

That I regret


Was her boyfriend's name $pace?
;D
Thought of one earlier today — Gorillaz at St Andrews on their first tour. Knew someone with an extra ticket and I passed on it. Regrets.