Depends what you're into, really. What music genres you're into and what you're doing, I think?
I listen to light Alt stuff when I run, peps me up or something. Matt and Kim - Daylight, Ubiquitous Synergy Seeker - Choices/Kit, Chairlift - Bruises, Conor Oberst - Breezy, Counting Crows - Mr. Jones, Neon Trees - Animal, Barenaked Ladies - Pinch Me, Alphabeat - Fascination, The Airborne Toxic Event - Sometime Around Midnight.
Lifting or bag work; Coolio - Gangster's Paradise, South Park Mexicans - Dirty Rich, Gorillaz - Clint Eastwood, KRS One - 9mm Goes Bang, Twiztid - How Does It Feel/Afraid of Me, Kevin Rudolf - I Made It, Jin - Carpe Diem, Cypress Hill - Rock Superstar/Dr. Greenthumb, Swollen Members - Warrior/Red Dragon, Jeremih - I'm A Star, KoRn - Coming Undone/Twisted Transistor.
And I listen to Chinese instrumentals while doing forms.
Uhh, yeah, I think that's it. Will edit other tunes if I think of 'em.