The Big Bang Theory has landed a big name in comedy: Jessica Walter will guest star on a February episode of this CBS sitcom.

The former Arrested Development star will portray Barbara Latham, a wealthy donor to the university whose science department causes potential problems for Leonard.

Josh Malina will also appear on this installment.

Walter voices a character on Archer and will also star on the new TV Land sitcom Retired at 35.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.