The movie began shooting in the fall of 2003 and took nearly 4 years to complete
According to the deleted scenes on the DVD, Webb works as a welder, Jess a babysitter, and Milk is a chef.
The alternate opening/ending of the film opens and closes as if it were a scary bed time story.
All the actors were chosen a week before the shoot except 'Rebecca Craven'. She auditioned for the role of Jess and lost out to another actress, but when that actress backed out, Craven was called back the day before the first day of shooting.
Fergus March and John Samuel Worsey were roommates before shooting the film and work together as a comedy duo on stage in England.