Best of 2010: No. 1 single, Cee Lo Green "Forget You"

Welcome to the Backstage Pass year-end countdown. Happy holidays! Last week, we looked at the best albums of 2010. This week, we tackle the singles.

#25-21 #20-16 #15-11, #10-6, #5-2

1. Cee Lo Green, “Forget You” (Elektra): This ranting kiss-off disguised as a Motown classic is smart, touching and impossible to forget, even before he gets to the thrilling bridge of soulful screams of “Why?” And, yes, the expletive-filled version with the title we can't print is way better.