Kid 'n Play

S2 E6: Will (Eric McCormack) discovers that Noah (guest star David Schwimmer) has a child he hasn't told Grace (Debra Messing) about, but is now sworn to secrecy. Karen (Megan Mullally) and Jack's (Sean Hayes) relationship is tested when she fires him from the play she's producing and replaces him with Jon Cryer (guest star).