A retrospective from various notable interviewees, and their memories of Robin Williams in his guest appearances on a multitude of talk and variety shows.
| Name | Type | Role | |
|---|---|---|---|
| Steve Martin | Guest Star | Himself | |
| David Steinberg | Guest Star | Himself | |
| Billy Crystal | Guest Star | Himself | |
| Eric Idle | Guest Star | Himself | |
| Lewis Black | Guest Star | Himself | |
| Pam Dawber | Guest Star | Herself | |
| David Steinberg | Guest Star | Himself | |
| Jay Leno | Guest Star | Himself | |
| Paula Poundstone | Guest Star | Herself | |
| Martin Short | Guest Star | Himself | |
| Johnny Carson | Actor | Himself (archival footage) | |
| Eddie Murphy | Actor | Himself (archival footage) | |
| Oprah Winfrey | Actor | Herself (archival footage) | |
| Barry Humphries | Actor | Dame Edna Everage (archival footage) | |
| Kevin Eubanks | Actor | Himself (archival footage) | |
| Ed McMahon | Actor | Himself (archival footage) | |
| Robin Williams | Actor | Himself (archival footage) | |
| Jennifer Saunders | Actor | Herself (archival footage) | |
| James Lipton | Actor | Himself (archival footage) | |
| Phil Hartman | Actor | Himself (archival footage) | |
| Graham Norton | Actor | Himself (archival footage) | |
| Jim Belushi | Actor | Himself (archival footage) | |
| Steve Lawrence | Actor | Himself (archival footage) | |
| Jonathan Winters | Actor | Himself (archival footage) | |
| Kevin Nealon | Actor | Himself (archival footage) | |
| Dana Carvey | Actor | Himself (archival footage) | |
| Ben Elton | Actor | Himself (archival footage) | |
| Michael Parkinson | Actor | Himself (archival footage) | |
| Joe Piscopo | Actor | Himself (archival footage) | |
| Charlie Rose | Actor | Himself (archival footage) | |
| Ringo Starr | Actor | Himself (archival footage) | |
| Jon Lovitz | Actor | Himself (archival footage) | |
| Elijah Wood | Actor | Himself (archival footage) | |
| Daniel Craig | Actor | Himself (archival footage) | |
| Dick Cavett | Actor | Himself (archival footage) | |
| Matt Damon | Actor | Himself (archival footage) |