For more of a rock sound, Follow you Home by Nickelback, Audioslave's Gasoline always gets me going. So does Show me how to live.
But Dirty Vegas' Dark Beat is fun no matter how many times I've heard it.
Madison Park is great for settling into nice steady breathing and cadence.
Sandra Collins, Traveling on is another perfect one for that.
Stonebridge, Can't get enough or Put em High or deeper love,
Pride from that soundtrack about the Plastic surgeons gets me going too.