Starting my iPod playlist with three songs:
Aretha Franklin -- Since You've Been Gone (Sweet Sweet Baby)
T-Rex -- Get it On (Bang a Gong)
Against Me! -- Thrash Unreal
You could make a difference in my workout tomorrow by suggesting a great song to get going to...
Any genre is fine--the more eclectic, the better: Broadway, Blues, Pop, Punk, Rock, Reggae, Soul, you get the idea.