I Met the Walrus (2007), written, directed and animated by Josh Raskin
From the press release on the official website: "In 1969, a 14-year-old Beatle fanatic named Jerry Levitan, armed with a reel-to-reel tape deck and a head full of questions, snuck into John Lennon's hotel room in Toronto and convinced John to do an interview. This was in the midst of Lennon’s “bed-in” phase, during which John and Yoko were staying in hotel beds in an effort to promote peace. 38 years later, Jerry has produced a film about it. Using the original interview recording as the soundtrack, director Josh Raskin has woven a visual narrative which tenderly romances Lennon’s every word in a cascading flood of multipronged animation. Raskin marries the terrifyingly brilliant pen work of James Braithwaite with masterful digital illustration by Alex Kurina, resulting in a spell-binding vessel for Lennon’s boundless wit, and timeless message."