Congrats to the cast and crew of 30 Rock for all their wins at the 2008 Emmy awards!

Entertainment Weekly’s Michael Ausiello sharing more casting news today.”Gossip Girl frenemies Leighton Meester and Blake Lively have closed a deal to guest-star in a November sweeps episode of NBC’s increasingly stunt-happy 30 Rock, sources confirm to me exclusively. The dynamic duo will play — prepare to laugh ’till you piddle — former high school classmates of Liz Lemon’s in a flashback sequence that reveals a shocking and deeply ironic truth about Tina Fey’s morally superior alter ego: She was a Mean Girl!”

Been looking for a way to watch episodes of 30 Rock that’s not on NBC.com? Well, AOL offers the same service of streaming full episodes online. Head over here if you’re interested.

Couldn’t the third season come any faster? Remember how Tina Fey wanted Oprah to guest star on 30 Rock? Her wish has come true! It has been reported that Oprah is in final talks in appearing on the Emmy-winning comedy. Who could be next?