30 Rock actress Tina Fey is desperate for Britney Spears to guest star on the hit show - after the pop singer's appearance boosted ratings on rival TV series How I Met Your Mother. The funny woman, who writes and stars in the NBC comedy, has featured opposite the Toxic star before on Saturday Night Live and is eager to work with the singer again.

And Fey, 37, has another beloved superstar on her wish list - Oprah Winfrey. She says, "We would love to work with Britney. I've worked with her twice on Saturday Night Live and she was very professional and nice. (And) I want Oprah to play my best friend. I want to spend time with Oprah, and I don't know what I need to do to make it happen."

Spears' cameo role on How I Met Your Mother, which aired on TV on Monday to rave reviews, scored the sitcom its biggest ratings ever.

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(This news article provided by World Entertainment News Network)