These Are My Friends Now is Train to Miami by Steel Pole Bathtub

I've gotten a whole lot more traffic since I've started posting about L4D, including this post, which got about 320 times more hits (320) than I expected (1) last week.

I'm pretty sure those googling for "These are My Friends Now" want to know what song it is and where to get it, though, so here's some help:

"These are my friends now" featured in the L4D TV trailer #2 is Train to Miami by Steel Pole Bathtub.