If you like cover songs, I just found this great new-to-me podcast called Coverville that features really great covers. I’m not talking “coverband” style covers, but real actual awesome artists doing covers. You can download them from their site or off of itunes. I started off by downloading the Pixies, Radiohead and REM episodes and they are great. I’m going back to download more now.
edit: If you check out their website you can see the songs that are included in each episode and the artists, not a bad line-up if I do say so myself!