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+.