Factual error: Early in the movie we see the newspaper dated "Sunday, March 14, 1987". March 14, 1987 was a Saturday, not a Sunday.

Blades of Glory (2007)
Trailers
Starring: Will Ferrell, Will Arnett, Craig T. Nelson, Amy Poehler, William Fichtner, Jenna Fischer, Jon Heder





Answer: He is credited. In the beginning, the credits read Will Farrell, then Blades of Glory, and THEN Jon Heder shows up.