Raising Hope

A lineup of our favorite guest stars and cameos of the season

By Deanna Barnert
Special to MSN TV

Stunt casting is part of the prime-time ratings game, but sometimes a cameo is about mutual appreciation. Case in point: Superstar Katy Perry, who guest starred on "Raising Hope". ... more Perry also visited "How I Met Your Mother," which continually vies with "30 Rock," "Glee" and "The Simpsons" for juiciest casting coups -- because who doesn't want to be on one of those shows?

Bing: More about Katy Perry | More on 'Raising Hope'

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"Raising Hope" airs Tuesdays at 8 p.m. ET/PT on FOX.

(FOX)