Guest Star Bonanza: Katy Perry On “HIMYM” And LuAnn De Lesseps On “Law & Order”

It’s a big day for guest star news. First, “How I Met Your Mother” fans have another pop princess to look forward to on the show. Like Britney Spears, Carrie Underwood, Jennifer Lopez, Mandy Moore and Nicole Scherzinger before her, Katy Perry will be appearing in an episode of the show, as a rare breed—a woman who actually piques Barney’s interest. Which means, she’s presumably not the titular mother. I’m starting to think I’m waiting for Santa Claus here. [NY Post]

Meanwhile, LuAnn de Lesseps of “The Real Housewives of New York City” has landed a role on “Law & Order: SVU.” She starts filming tomorrow and will be playing an art collector who likes to pose naked. Money may not be able to buy you class, but notoriety sure will land you acting parts. [NY Post]

And finally comes the news that Will Ferrell will have a new cubicle … at Dunder Mifflin on “The Office.” He will appear in four episodes of the show, as a branch manager whose incompetence makes Michael Scott’s look minor. [PopEater]

Happy watching!