Allen has been long time friends with Adam Sandler, which should come as no surprise to Sandler fans as Allen has appeared in over 12 of Adam's movies. Allen frequently writes for Adam.
Allen took many villain or antagonistic roles such as the nerdy journalist in
Mr Deeds(2002), or the romantic rival in
Anger Mangement(2003); Coincidently Allen was a executive producer for the 2003 hit
Anger Mangement.
Allen scored his first starring role in
Grandma's Boy (2006).
Allen frequently writes for Adam's production company
… More Happy Madison.
Allen grew up in Florida and now lives in Los Angeles where he is the youngest of two children.
Allen lists his influential movies as "Caddyshack, Animal House, Fast Times at Ridgemont High, and "any of the John Hughes comedies".