
Acting
Leonard Michael Maltin (born December 18, 1950) is an American film critic and film historian, as well as an author of several mainstream books on cinema, focusing on nostalgic, celebratory narratives. He is best known for his eponymous annual book of movie capsule reviews, Leonard Maltin's Movie Guide, which was published annually from 1969 to 2014.
Description above from the Wikipedia article Leonard Maltin, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Now, Irving Rapper
as Self

Stella Stevens: The Last Starlet
as Self

Long Lonesome Highway: The Story of Michael Parks
as Self

Blake Edwards: A Love Story in 24 Frames
as Self

Drew Friedman: Vermeer of the Borscht Belt
as Self

The Life and Times of Farmer Al
as Self

Temple of Film: 100 Years of the Egyptian Theatre
as Self

Dick Tracy Special: Tracy Zooms In
as Self
Boris Karloff: The Rest of the Story
as Self - Interviewee

Only in Theaters
as Self

100 Years of Warner Bros.
as Self · 3 ep.

Eli Roth's History of Horror
as Self · 4 ep.

BoJack Horseman
as Leonard Maltin (voice) · 1 ep.

Moguls & Movie Stars: A History of Hollywood
as Self · 7 ep.
Maltin on Movies
1 ep.

Make 'Em Laugh: The Funny Business of America
as Self - Film Critic and Historian · 6 ep.

The Annie Awards
as Self - Host · 1 ep.
Good Day Live
as Self · 5 ep.

The View
as Self · 1 ep.

Arli$$
as Leonard Maltin · 1 ep.
These Amazing Shadows
2011