'Big Bang Theory': Judy Greer to guest star

judy-greer-miss-guided-320.jpgGuess who's making a guest appearance in Sheldon's bedroom?

A girl!

Warner Bros. TV confirms that actress Judy Greer -- of "13 Going on 30," "27 Dresses" and "Arrested Development" fame -- will appear on "The Big Bang Theory" later this season.

Greer's character will be a well-known scientist whom Sheldon ( Jim Parsons) apparently finds worthy of spying his private quarters.

Yes, we said private quarters, not private parts. Let's be clear. The world hasn't gone completely mad.

Or has it?

Pumped to see Sheldon extend such an intimate invitation?

Weigh in below.

"The Big Bang Theory" airs at 9:30 p.m. ET Mondays on CBS.

Follow Zap2it on Twitter and Facebook and Korbi on Twitter for the latest movies, TV and celeb news.

Check out Korbi TV's exclusive small screen coverage

Related:

'Big Bang Theory': Jim Parsons wants Betty White to play Sheldon's mee-ma
'Big Bang Theory's' Jim Parsons: Sheldon feels violated, has dark time ahead
'Big Bang Theory': Simon Helberg on Wolowitz's new woman

Photo credit: ABC