Here's my 'gotta sing along' list:

Lawyers, Guns, and Money - Warren Zevon
Carmelita - Warren Zevon
A Pirate Looks at 40 - Jimmy Buffett
Gypsies in the Palace - Jimmy Buffett
Crackhead - Kenn Kweder
Susie Said So - Kenn Kweder
Atlantic City - Springsteen
Jungleland - Springsteen
No Woman, No Cry - Bob Marley
The Weight - The Band
Allison - Elvis Costello
Time After Time - The Hooters (or the other one)
Girls Talk - Dave Edmunds
Bad Reputation - Joan Jett

and the one song that nobody on the planet under the age of 65 can not sing along to compulsively.....
Bohemian Rhapsody. :D