I've found that "Boots of Chinese Plastic", the opening track of the new Pretenders CD, drives out a wide variety of earworms, without leaving much residue.
It might work for you.
Here's the video of the song performed on Letterman, on the eve of the album release. (I admit though that it's tough to make out the lyrics in the video.)
By the way, you look fantastic, in your boots of Chinese plastic.