Finn majored in English at Southern Methodist University in Dallas, Texas and was a member of the Texas Delta chapter of the Phi Delta Theta fraternity. He has been a member of the Lake Forest Players' Club since the early 1990s, and is well known for his recitals of epic Shakesperian soliloquys.
Finn is perhaps best known for his voice role as Spud in the animated series American Dragon: Jake Long and for co-starring in the sitcoms Life on a Stick and Help Me Help You. He has also appeared in the films Gone, But Not Forgotten, Psycho Beach Party, Rolling Kansas, The Dukes of Hazzard and played a small but memorable role as a smart-ass fast-food cashier in Super Troopers. He co-starred in the film Bar Starz in 2008. He provided additional voices in Happy Feet Two. Finn also portrayed Captain 'Black Jack' Bonfield in the "Chicago" episode of Derek Waters' Drunk History on Comedy Central.
