Here's Ben Kweller, playing "Penny on the Train Track" live on David Letterman:
This song came from the 2006 album appropriately titled Ben Kweller. As you might imagine, the rest of the album also evidences a strong Tom Petty influence, and I highly recommend it. The production is a departure from his earlier albums--it's more wall-of-sound than his previous efforts--and it comes across very well. His songwriting and lyrical creativity reached a new level on this record, and if I'm not mistaken, Ben Kweller played all the instruments on this one himself.