Grandpa Jack

S1 E4: Jack (Sean Hayes) is stunned to learn that his estranged son, Elliot (guest star Michael Angarano) has a son of his own, Skip (guest star Jet Jurgensmeyer). Moreover, Skip needs the kind of help only Will (Eric McCormack) and Jack can provide. Grace (Debra Messing) and Karen (Megan Mullally) behave badly with the hot new guy at work.