I Never Cheered for my Father is the 21st episode of the sixth season and 143rd overall.
Responding to the pleas of his father's mistress turned girlfriend Tina, Will attempts to discover whether there is a new woman in his dad's life. However, when his father's new mistress turns out to be his mother, Will must find a way to break the shocking truth to Tina. Meanwhile, Elliot's decision to try out for his high school cheerleading squad has Jack all smiles as he is determined to help his son make the team.
- Eric McCormack (Will Truman)
- Debra Messing (Grace Adler)
- Sean Hayes (Jack McFarland)
- Megan Mullally (Karen Walker)
- Blythe Danner (Marilyn Truman)
- Lesley Ann Warren (Tina)
- Michael Angarano (Elliot)
- Sara Paxton (Melanie)
- Debra Messing does not appear in this episode (Grace was "out of town").
- This episode is Elliot's only appearance this season, though he was mentioned in "Courting Disaster". He was last seen in Season 5's "Field of Queens".