Extra Action invaded RailsConf 2007 in Portland, leading to one of the most memorable shows I've ever been to.

My friend says the Rails community bifurcated at that moment, split between those who thought it was awesome, and those who thought it was disruptive and unprofessional.

Heh - I've got a picture somewhere of a friend of mine playing trumpet with Extra Action Marching Band with David Byrne. (And some insane stories about the Extreme Elvis tour of Vegas where they played the entire first Back Sabbath album).