[1] Kroeger now stars in a podcast called The Gary and Kenny Show co-starring his best friend Ken Ceizler.
In 1982 Kroeger, along with his fellow Practical Theatre Company performers Brad Hall, Julia Louis-Dreyfus, and Paul Barrosse, joined the cast of Saturday Night Live during Lorne Michaels's hiatus from the show, under the direction of Dick Ebersol.
During his tenure, Kroeger, who also wrote for the show, was frequently cast as a young teenage kid and impersonated Walter Mondale when he was the Democratic candidate for US President in 1984.
Since then he has kept a fairly low profile, appearing in only a handful of movies, including roles as a producer in Christopher Guest's 1989 Hollywood send-up The Big Picture; as Reggie Mantle in 1990's Archie: To Riverdale and Back Again;[3] and in the lead and title role in the spoof film A Man Called Sarge.
Kroeger played a major role in the Murder, She Wrote episode "The Grand Old Lady" as brainiac Christopher “Christy” McGinn, who ultimately solves the mystery.
[6] Kroeger also made a guest appearance in the episode Columbo: Death Hits the Jackpot (1991), as the murder victim.
Kroeger is a weekly columnist for the Waterloo Cedar Falls Courier and also writes a blog, "Gary Has Issues".