Buza played Turner Edison on Maniac Mansion for the entirety of its 1991–1993 run on YTV and The Family Channel.

He also had a recurring role on the Red Green Show as Dwight Cardiff, the extremely lazy marina operator.

He also makes a small appearance as a trucker in 2000's X-Men movie, and a biker in George Romero's Diary of the Dead.

[4] He voiced Grandpa Granger in the English dub of Beyblade, Chief Chirpa on Star Wars: Ewoks, and additional roles in Star Wars: Droids, The Busy World of Richard Scarry, Mythic Warriors: Guardians of the Legend, The Neverending Story, Babar, Hammerman, Jayce and the Wheeled Warriors, Grossology, Iggy Arbuckle, Dog City, Pecola, Monster Force, Franny's Feet, Starlink: Battle for Atlas and Tales from the Cryptkeeper.

In 1992, he was nominated for a Gemini Award for Best Performance in a Comedy Program or Series (Individual or Ensemble) for Maniac Mansion.