Which movie where he turned out to be the protagonist's son at the end?
I'm looking for a movie, a comedy or dramedy, where at the end, the protagonist finally meets his daughter and son.
The son was portrayed by Adam Scott but I don't recall him having a speaking role.
I believe it was an Apatow crew movie, starring someone like Ben Stiller or Vince Vaughn or Paul Rudd. That should be easy to find, but somehow I haven't been able to.