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

Jenna: Oh, I'm not worried because I have something the other actors don't.
Liz: Don't say your sexuality.
Jenna: My sexuality.
Liz: Oh, god, Jenna! When has that ever worked?
Jenna: When has it not worked?!

Passing out and cursing on St. Patrick's Day. Is nothing sacred anymore?