TV is chock-full of celebrities this week.
Katy Perry makes an appearance as a not-so-glamorous prison guard on Fox's "Raising Hope" on Tuesday. Sean Hayes has a stint as a Indianapolis talk show host interested in interviewing Leslie on Thursday's "Parks and Recreation" on NBC. And "Scrubs" fans can catch Sarah Chalke working with Bill Lawrence again on Tuesday's "Cougar Town" on ABC.
Plus, there's plenty of new programming to tune into: "Breaking In" returns to Fox on Tuesday for its second season premiere, featuring new series regular Megan Mullally; the long-awaited (and Sarah Palin-hated) "Game Change" premieres on HBO on Saturday; and "Bob's Burgers" is back on Sunday on Fox for the sophomore premiere of this surreal and underrated comedy.
Check out our slideshow to see what else is worth watching this week.