THE AWARD FOR MOST EMBARRASSING COMEBACK ATTEMPT BY A WARHORSE ROCK STAR WHO SHOULD HAVE KNOWN BETTER, GOES TO:

Paul McCartney for his recent SNL appearance while performing an excruciatingly painful off key version of Band on the Run.

Alas! Poor Paul, we thought we knew you.

http://www.youtube.com/watch?v=fUJTyVQSS3M&feature=related