TUNE IN TONIGHT

BILL COSBY: THE MARK TWAIN PRIZE 2009

PBS, 8 p.m. ET

(Check local listings)

This year’s recipient of the Mark Twain Prize is Bill Cosby, and the co-hosts for this black-tie, lots-of-laughs event at the John F. Kennedy Center are Jerry Seinfeld and Chris Rock. If you need more than those three reasons to tape this for later viewing, I give up.