In 2003, Swardson co-wrote the screenplay for "Malibu's Most Wanted" along with the film's star Jamie Kennedy and Adam Small. That same year he took on the role of Terry Bernadino on the Comedy Central series "Reno 911!". A recurring character throughout the series' run from 2003 to 2009 — in addition to appearing in the film "" — Swardson played the role of a flamboyant gigolo who was often seen wearing roller skates. 2003 also marked the beginning of a longtime working relationship and friendship with Adam Sandler. After having seen Swardson's Comedy Central special, Sandler contacted Swardson to ask if he'd be interested in collaborating; Swardson's first project with Sandler was co-writing the screenplay for "Grandma's Boy" — Swardson also co-produced and had an acting role in the film which was released in 2006.