I have run to Speak For Me by Cat Power so many times. The style is singer/songwriter, which is a style of music I love, but not always for running. This song however is quite powerful, with her deep almost masculine voice, it really gets me running. If you like Cat Power head on over to her page on Epitonic for some free downloads.
The BPM using MixMeister is 91, so works for a 180 SPM run.