Adam B. Vary
June 14, 2011 AT 04:07 PM EDT

Image Credit: Kevin Parry/WireImageEmmy-winning actress Megan Mullally (Will & Grace) will be the guest judge on this week’s episodes of Fox’s So You Think You Can Dance (Wed. and Thurs. at 8 p.m. ET/PT), joining permanent judges Nigel Lythgoe (also the show’s exec producer) and Mary Murphy. A longtime fan of the dance competition show — this reporter saw her in the audience of the Season 2 finale — Mullally has also starred in three big Broadway musicals: Grease in 1994 with Rosie O’Donnell, How to Succeed in Business Without Really Trying in 1995 with Matthew Broderick, and Young Frankenstein in 2007 with Roger Bart.

Last year, So You Think You Can Dance featured three permanent judges (Lythgoe, choreographer Mia Michaels, and director Adam Shankman), but this season it is returning to its longstanding format of featuring two permanent judges with a rotating guest judge.

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Read more:

‘SYTYCD’ host Cat Deeley on Mary Murphy’s return: ‘I’m just delighted the Hot Tamale Train is rolling back!’

‘SYTYCD’: Mary Murphy on returning to the judges chair, and the cancer scare that almost took her voice

EW’s ‘SYTYCD’ recaps

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