A bit late, I'm afraid, but Crumbs do come about once a year so I thought I'd post nonetheless
I saw them in Basel the other week (for the first time), was a bit sceptical about the whole improv-theatersport thing, but they blew me away. I literally wept with laughter! So intelligent and funny, the storylines they came up with as they went along and the colourful characters would've been hilarious enough had it not been improvised.
I think they're coming back in November, definitely worth going to see them!