The most recent example I can think of is the PlayStation commercial with the two people in the mall singing along to The Cure's "Friday I'm In Love."  Love the song, but these two people singing in the mall really shouldn't give up their day job...  ;)

That's OK.  It's better than a song that was used in a commercial about a year ago... for a while during the kids' programs, I'd see a commercial for a pull-up training pant (made by Pampers, I think) which used Snap's "The Power" as bed music (and at the end of the commercial, after the kid has successful gone to the bathroom by themselves, you hear: "I've got the power!").  Oh, let's just say that the mental images I get now when I hear that song are quite different than when I was hearing it on the radio 16 years ago... oi!  :X