(written from a Production point of view)
Schaal is among several Star Trek alumni who have appeared in numerous films directed by Joe Dante. Others who are members of the informal Dante troupe include Robert Picardo, Henry Gibson, Dick Miller, William Schallert, and Kenneth Tobey. Schaal was a regular on Ricardo Montalban's TV series Fantasy Island during the 1981-82 season.
Schaal currently co-stars on the animated comedy series American Dad!, created by and starring Star Trek: Enterprise guest star Seth MacFarlane, as well as Scott Grimes, who appeared in Star Trek: The Next Generation episode "Evolution" in an uncredited role as Eric.
- Loving Annabelle (2006, with Michelle Horn)
Appearances with Robert Picardo
- Amazing Stories
- The 'burbs (1989) – with Gibson, Miller, and Cory Danziger
- Innerspace (1987) – alongside Gibson, Miller, and Schallert, as well as Grainger Hines, Robert Hooks, Andrea Martin, Richard McGonagle, and Mark L. Taylor.
- Munchies (1987) – with Ellen Albertini Dow and Frank Welker
- Out There (1995) – with Leslie Bevis, William Campbell, Bill Cobbs, Paul Dooley, and Carel Struycken
- Small Soldiers (1998) – with Miller joined by Kirsten Dunst, Frank Langella, and Michael McKean