Monty Python's Spamalot is a comedic musical "lovingly ripped off from" the film Monty Python and the Holy Grail (1975). Like the film, it is a highly irreverent parody of the Arthurian Legend, but it differs from the film in many ways, especially in its parodies of Broadway theatre. Eric Idle, a member of the Monty Python team, wrote the musical's book and lyrics, and collaborated with John Du Prez on the music. Running since March 17, 2005, it was directed by Mike Nichols and won three Tony Awards, including the Tony Award for Best Musical of the 2004–2005 season.

Idle explained the title in a February 2004 press release about the musical:

Tagline: A new musical (lovingly) ripped off from the motion picture.