He began his career by organizing a comedy troupe while a student at Carleton College in Northfield, Minnesota. After graduation, he was performer and writer at Dudley Riggs' Brave New Workshop in Minneapolis.
Later, Menzel founded the Comedy Workshops in Houston and Austin, Texas. He founded, with Layton Payne, Business Stages, a consultancy which uses acting and improvisational exercises to teach management and cooperative skills.
- Terms of Endearment (1983)
- Uphill All the Way (1985)
- The Lady from Yesterday (1985)
- Adam: His Song Continues (1986)
- A Tiger's Tale (1987)
- The Fulfillment (1989)
- Without Warning: The James Brady Story (1991)
- A Seduction in Travis County (1991)
- Trial: The Price of Passion, Part 1 (1992)
- My Boyfriend's Back (1993)