Other notable film roles included the college comedy Midnight Madness (1980), as a team leader in an all-night mystery game, the action thriller Silent Rage (1982), as deputy to a sheriff played by Chuck Norris, and the comedy The Dream Team (1989), as a good-natured psychiatric patient.

", as a school principal with a personality mirroring Flounder's in the music video for Twisted Sister's "I Wanna Rock.

[7] In 1979 he starred as an overweight high school tuba player coerced onto the wrestling team in Kieth Merrill's feel-good underdog film, Take Down.

[8] Furst appeared in 1982 in an episode of Newhart called "Sprained Dreams" where he played a Dartmouth College student.

[10] In 1983, Furst also appeared alongside Erik Estrada, Tom Reilly, and Heather O'Rourke in an episode of CHiPs titled "Fun House" as a student who belonged to the college fraternity "DDT".

[17] In the same year, he was cast as Walter Nichols in the unaired pilot of the Nickelodeon television series Drake & Josh, but his identity was unknown in visuals, until his name was revealed in a YouTube video from 2017.

[21][22] Furst produced My Sister's Keeper, based on the Jodi Picoult novel, starring Cameron Diaz and Alec Baldwin.

Cold Moon, a psychological thriller based on the Michael McDowell book, is set for a theatrical release in October 2017 in the United States.

[28] Starting in June 2006, Furst co-hosted the Renal Support Network's webcast "KidneyTalk" with Lori Hartwell.

[31] As a celebrity spokesperson for the American Heart Association, Furst said, "I thought I was more powerful than the disease of diabetes, but in reality, I was letting it take control of me.