Not that I consider myself a "builder" just yet, but anytime I'm working on anything in the garage its:
Social D, NOFX, Anti-Flag, Reverend Horton Heat, Mistfits, Black Flag, Vandals, Descendents....
Unless Of course I'm in a different mood then it's Jazz, electronica, OLD country etc.
I consider myself to be pretty eclectic when it comes to music.