IF you are talking about the commercial's that have been playing in late March 2008 the answer is "Are you with me" by Vaux if not im not sure.
If you are referring to the commercial for the episode after Warrick gets shot, the song is "The Funeral" by Band of Horses.
Check it out on YouTube, the part from the commercial is a little bit into the song.
If you are talking about the one playing as of 9/20/09, its sang by Visual Audio Sensory Theater (V.A.S.T.) and the song is called "Touched".
The name of the song in the latest Kia commercial is Applause by Lady Gaga. The song is featured in a Soul commercial.
the song was only made for commercial. :(
"Touched" By Vast.
Band of Horses - The Funeral
the song is believe by the bravery
Someday by Nickelback.
gossling
The Strokes
Black Friday song.
The song is "Love Sick" by Lindstrom.
Your mom
ladies and gentleman by saliva