Smash Stages Will & Grace Reunion: Sean Hayes to Guest Star!

Hayes will reunite with his former costar Debra Messing in the NBC hit's second season

Kevin Bacon better hide because Jack is coming back to NYC!

OK, not really, but Will & Grace's Sean Hayes is set to return to the Big Apple when he guest stars on former costar Debra Messing's hit NBC show Smash, the network announced today. 

Jack and Grace together again?! Best. News. Ever.

Hayes will appear in a multi-episode arc as Terrence Falls, a comedic TV and film star making his Broadway debut in the musical Liaisons, based on Les Liaisons Dangereuses. 

Due to a series of comic circumstances, Terrence becomes a major thorn in the side for Ivy (Megan Hilty) and other characters. (Fingers crossed one of them is Messing's Julia!)

"I'm very excited to be guest-starring in a multi-episode arc on @NBCSmash this season," Hayes tweeted. "Back to Broadway…sort of."

Smash is set to return to NBC in 2013.

(E! and NBC are both part of the NBCUniversal family.)