Beaulieu appeared as a semi-regular in Freaks and Geeks as the school's biology Teacher, Mr. Lacovara. He also appeared in The West Wing episode "Bad Moon Rising". For the last few years, Beaulieu has been a Writer for America's Funniest Home Videos. In 2002, he was the head Writer, Producer, and host of the pilot episode of the Animal Planet show People Traps. He has since starred in the 2010 computer game Darkstar: The Interactive Movie as first officer Ross Perryman. In 2013, he reprised his role as Crow for a brief cameo appearance in two episodes of the fourth season of Arrested Development, along with Joel. In 2015, Beaulieu appeared as ART in the Yahoo! original comedy series, Other Space.
On October 30, 2007, Joel Hodgson announced he was starting a new series—distributed on DVD—with the same "riffing on bad movies" premise as MST3K. Called Cinematic Titanic, it featured several former MST3K cast and crew members: Beaulieu, J. Elvis Weinstein, Frank Conniff and Mary Jo Pehl.
Outside of acting, Beaulieu also wrote the script for the one-shot comic book Here Come the Big People, published by Event Comics. In 2010, Beaulieu completed work on a children's poetry book, Silly Rhymes for Belligerent Children, a dark, twisted, humorous collection illustrated by Len Peralta.
Cinematic Titanic completed its final tour on December 30, 2013.
Beaulieu appeared on Ken Reid's TV Guidance Counselor podcast on June 16, 2016.
