DVDFile.com: Life Of Reilly: In-depth interview about the actor's experience working with P.T. Anderson on "Hard Eight", "Boogie Nights", and "Magnolia", as well has his approach to acting for all his films.
Entertainment Weekly -- It List 2000: John C. Reilly: Short profile with original photo and quotes, including his work ritual and dream project.
Facing the Challenges of "The Perfect Storm": Associated Press interview.
Film Unlimited: Triumphant Loser: Interview with the actor about his role in Magnolia, working with Paul Thomas Anderson, and the role of randomness in everyday life.
Five questions with John C. Reilly: Interview about the challenges the actor faced making "The Perfect Storm."
FreshAir Interview: Streaming RealAudio interview with the actor from the NPR radio program. Approximately 45 minutes, this program first ran 13 January 2000.
Guardian Unlimited Film: The real star of Magnolia, John C. Reilly: Article about "Magnolia" and some of Reilly's previous films. Includes some biographical information.
IMDb: John C. Reilly (I): Filmography, trivia, photo gallery.