Actor Steve Carell promotes his new improv show "Riot."
Stacy Keach, Nick Thune and David Faustino visit.
Astronaut Buzz Aldrin and "Saturday Night Live" alum Dana Carvey.
Actor and comedian Bob Saget promotes his new book "Dirty Daddy"; singer and reality star La Toya Jackson stops by.
Co-host of "Loveline" and "The Man Show" Adam Carolla faces off with Tom.
Parodist Weird Al Yankovic.
Actor, host and author Alan Thicke promotes his new reality show "Unusually Thicke."
Former "Saturday Night Live" cast member and "Weekend Update" anchor Norm Macdonald.
Host of AXSTV's "Big Interview" Dan Rather.
Actor and comedian Andy Dick.
Comedy duo Cheech and Chong.
Prop comic Carrot Top.
Comedian and author Sandra Bernhard.
Blake Anderson, Adam DeVine and Anders Holm from "Workaholics."
Tattoo artist Kat Von D; former Skid Row singer Sebastian Bach.
On the guest list are Tom's parents, Brody Stevens and Neil Hamburger.
Actor, writer and producer Seth Green.
From Delta House to Dixie with Tim Matheson.
Dr Drew stops by for a consultation.
Tom chats with actor Richard Belzer.
Howie Mandel.
Skateboarding icon Tony Hawk.
Henry Rollins; Eric Andre.
Radio personality Artie Lange.
Award-winning comedian Russell Peters.