TV

'30 Rock''s guest stars

'30 Rock''s guest stars -- Oprah Winfrey, Jennifer Aniston, and others have made cameos on the NBC comedy

Jon Hamm is hardly the first big name to cameo on 30 Rock this season. Here, we grade the parade of marquee players.

Oprah Winfrey
Calypso! Sweater capes! Never has there been a truer send-up of O power — and this time she’s in on the joke. A

Steve Martin
His turn as a criminal-posing-as-eccentric-agoraphobe strains even 30 Rock’s wide wackiness threshold. B-

Jennifer Aniston
Her go-for-broke appearance as Liz’s crazy friend from college reminds us why she’s a star, tabloids aside. A-

Salma Hayek
We can see why Jack would instantly fall for his mother’s caretaker — but it’s not because she’s hilarious. C+

Originally posted January 23 2009 — 12:00 AM EST

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