Kristian Matte (the actor who played Jason) actually played Michael Myers in the subway shot of Michael going to work in the introduction. If you look in the background, passengers are acting scared and Jordan Crowder plays Ricky and Julian Di Nardo (Hannibal) plays Norman Franklinson, both characters from Crowder's previous short films.
Jordan made "Horror Friends" while in film school at Champlain College during a semester where he had no production classes. The project essentially replaced a film course and took about a month to shoot over 4 weekends. Later in the year he re-cut the short and used it for credit in a Satire course, which is the version currently available.
In fall 2008, Crowder released videos related to "Horror Friends" for the 5 year anniversary of its success. A video blog update with Freddy Krueger (Freddy's Vlog), a RickRoll with Michael Myers (MikeRoll'D) and a series of interviews known as the "Horror Friends: Master Class."