What kind of music do you listen to while working out?

I like upbeat songs for the gym so my ipod gym playlist contains stufflike Britney,GaGa,Sophie Ellis Bextor, The Ting Tings, Cobra Starship, Nelly Furtado and Rihanna.

I also throw in a couple of slower songs like

Broken Strings and I hate this part right here.

GaGa, Kelly Rowland, some dance music, Nelly Furtado, Black eyed peas, Scissor sisters and Rihanna :D

hip hop, hard rock/metal, podrunner podcast which is sorta techno, and some r/b

occasionally jazz.