When Denis Leary stops by The Daily Show with Jon Stewart, it’s always a good time - check out this May 15 video clip.

“Lost” star Josh Holloway chats with Jimmy Kimmel in this May 15 video clip.

“The Office” star Rainn Wilson stopped by the May 14 Tonight Show with Jay Leno in this video clip.
More of Rainn Wilson on the Tonight Show after the jump, including his run for Vice President with John McCain.

The Office star Steve Carell stops by the May 13 Conan O’Brien in this video clip, talking about (among other things) his hosting gig on the season finale of Saturday Night Live.
More of Conan O’Brien’s interview with Steve Carell after the jump.

Jimmy Fallon, the heir to the Late Night throne, talks with Conan O’Brien in this May 12 video clip. He’s so fidgety - hope he can sit still when he takes on the hosting gig!
More of Jimmy Fallon on Conan O’Brien after the jump.

Harrison Ford stops by the May 9 Tonight Show with Jay Leno in this video clip, talking about the new Indiana Jones movie, among other fun things.
Part two of Jay Leno’s Tonight Show interview with Harrison Ford after the jump.

The Office star Jenna Fischer stops by the May 8 Tonight Show with Jay Leno in this video clip.
More of Jenna Fischer’s Tonight Show interview after the jump.

John McCain stopped by to chat with Jon Stewart in this May 7 Daily Show video clip. Check out John McCain’s joking announcement that Rainn Wilson (The Office’s Dwight Shrute) could be his running mate. More after the jump.