In this clip from an "unprecedented Gossip Girl event," which will happen Wednesday, January 9 in the form of an all-new Gossip Girl episode, Serena has it out with Blair over a rumor that started when S tried to cover for B... could it have to do with a pregnancy test? Check it out...

[youtube]http://www.youtube.com/watch?v=0OHf9vv6Efw[/youtube]

This may end up being the last episode of Season 1, as the writers' strike continues with no end in sight. At least it looks like it will be a good one. Follow the jump for another sneak peak from "The Thin Line Between Chuck and Nate," when Dan trying to profess his love for Serena ...

[youtube]http://www.youtube.com/watch?v=cmp9iQSUwAE[/youtube]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.