Willie Best appeared in more than one hundred films of the 1930s and 1940s. Although several sources state that for years he was billed only as "Sleep n' Eat", Best received credit under this moniker instead of his real name in only six movies: his first film as a bit player (Harold Lloyd's "Feet First") and in "Up Pops the Devil" (1931), "The Monster Walks" (1932), "Kentucky Kernels" and "West of the Pecos" (both 1934), and "Murder on a Honeymoon" (1935). He thereafter usually received credit as "Willie Best" or "William Best".