Convention shooters - favorite lenses
For those of you out there that attend conventions (be them ComiCon, NDK, RennFest, VMWorld, etc.) and take photographs as you go - what are your favorite lenses for shooting conventions?
I am thinking that a nifty-50, or possibly a 35mm would be good for convention photography, but I am uncertain. Considering that I don't currently have either lens (at least not in a prime), I will likely wind up eventually getting both of them, but if there is something that people come to a consensus on as a "great standard" for convention shooting, I may be swayed.