Schallert also appeared in several films. He had roles in "The Man from Planet X" (1951) with Robert Clarke, "The Tarnished Angels" (1958) with Robert Stack, "Blue Denim" (1959) with Brandon deWilde, "Pillow Talk" (1959) with Doris Day and Rock Hudson, "In The Heat Of The Night" (1967) with Sidney Poitier, "Speedway" (1968) with Elvis Presley, "The Jerk" (1979) with Steve Martin, "Teachers" (1984) with Nick Nolte, and "Innerspace" (1987), in which he played Martin Short's doctor. Schallert was a founding member of the Circle Players at The Circle Theatre, started in 1946, now known as El Centro Theatre.