Oprah Winfrey on 30 Rock

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It's Oooooooprah Winfrey!

The television icon is guest-starring on 30 Rock Thursday night.

And as you can tell from the clip below, Liz Lemon is almost as excited about this appearance as we are:

[video url="/videos/oprah-on-30-rock/" title="Oprah on 30 Rock"][/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.

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30 Rock Quotes

Devon: You familiar with the Church of Practicology?
Jack: You mean the cult that was invented by Stan Lee?
Devon: No, I mean the religion founded by the alien king living inside Stan Lee.

Jenna: Jack, can we talk, one ten to another?
Jack: I'm an eleven, but continue.