The host of NBC's "Tonight Show" filled in for regular co-host Roger Ebert, who was recovering from cancer surgery.
The comedian reviewed the films "Talladega Nights: The Ballad of Ricky Bobby," "Miami Vice," "Little Miss Sunshine," "The Night Listener" and "Shadowboxer," The Hollywood Reporter said.
Leno was the first of at least three planned guest hosts, the report said. Director Kevin Smith is set to host in a show airing Aug. 12-13.
While not widely known as an actor, Leno had a number of small roles early in his career in mostly unsuccessful movies. An exception was a bit part in the popular "American Hot Wax."
His most prominent role was in the 1989 film "Collisioni Course," a comedy about a mismatched crime-fighting duo, in which he played a detective opposite Pat Morita.