A fascinating look at the most beloved comedy team in motion picture history. Exclusive interviews with those closest to the brothers supplement this collection of highlights from their film, theater, and television appearances and offer a compelling look at their lives both on and off-screen.
| Actor | Role |
|---|---|
 Gene KellySelf - Narrator (voice) | Self - Narrator (voice) |
 Groucho Marx(archive footage) | (archive footage) |
 Chico Marx(archive footage) | (archive footage) |
 Harpo Marx(archive footage) | (archive footage) |
 Margaret Dumont(archive footage) | (archive footage) |
 Woody AllenSelf | Self |
| IIrving BrecherSelf | Self |
 Dick CavettSelf | Self |
| GGeorge FennemanSelf | Self |
 George J. FolseySelf | Self |
 Robert KleinSelf | Self |