13. Tom Jones - (S4 E7 - "Marge Gets a Job")
Jones is kidnapped by Waylon Smithers under orders from Mr. Burns in an attempt to woo Marge from Homer. It's pretty straight forward; who else comes to top of mind when you want to loosen up a women's panties?
Sir Tom Jones of course. And when you have a change of heart and want to do something nice for a couple, who do you want? Sir Tom Jones, obviously. Rumour was that Tom Jones was quite flattered to appear on the show and offered to perform for the cast and crew after he was done recording his lines, which included waving. Nice...and...slow...