Itwasthebestnightever.com was an actual internet page featuring photos from the double date night and a black and white video of Jason Segel performing the song "Best Night Ever".
The music video of "Best Night Ever" features Nuno Bettencourt from the band Extreme and parodies the music video from their song "More Than Words".
When describing the agenda for Vermont Marshall mentions it's syrup season. Then the fall colours. Syrup season would be early spring.
The character named "Shea" may have been inspired by the First Assistant Director whose name is listed in the credits as "Michael Shea".