Via Politico, but this list seems pretty comprehensive.
Obama gets sworn in — twice
Sarah Palin resigns
Sheila Jackson-Lee addresses Michael Jackson's funeral
Patti Blagojevich teams up with Heidi and Spencer on reality TV
The White House beer summit
Sanford confesses — and confesses, and confesses
Tom DeLay goes on "Dancing With the Stars"
Bloomberg, Gingrich and Sharpton team up
Who's the leader of the GOP?
Doug Hoffman says ACORN stole his election