Losing many large Jackpots on Blitz. Seriously, if someone was awarded $1 for every 1000 points I lose due to Jackpot fails they would be millionares by now.
I gave up on Jackpot, now that I've GS'd the Blitz songs that need them (Metal Health, Shout).
We've ended on a sour note:
http://www.facebook.com/RB3isFlawed