Starring: Will Ferrell, Will Arnett, Craig T. Nelson, Amy Poehler, William Fichtner, Jenna Fischer, Jon Heder
Visible crew/equipment: When Chazz and Jimmy are in the house a crew member is reflected on the glass window.
Visible crew/equipment: When Jimmy and Chazz are talking about their song during dinner you can see a crew member reflected on the exercise Bike.
Continuity mistake: When Stranz Van Waldenberg is chasing Chazz, the latter slides under a pipe, followed by Stranz, who leans backwards. We are shown a close-up of Stranz standing up and continuing skating, at which point the camera cuts to a close-up of Chazz and Stranz can be seen standing up for a second time in the background.
Answer: Jon Heder was not uncredited. His name is on the posters, etc.
Myridon