Art Garfunkel

Wait, was that really the Art Garfunkel on the March 1 episode of HBO's Flight of the Conchords (Sundays at 10 pm/ET)? Yes! Conchords' Jemaine Clement and Bret McKenzie wrote the episode, titled "Prime Minister," around him, and then prayed he'd say yes to a cameo. Garfunkel says he took "a leap a faith" and signed on without seeing a script.

In the episode, Jemaine and Bret book a gig as Simon and Garfunkel lookalikes, where they meet Karen (guest star Mary Lynn Rajskub, 24's Chloe), a woman who asks Jemaine on a date. The catch: He has to wear his Garfunkel costume, even when they have sex — she calls it "Garfunkling." We talked to its namesake about being immortalized by such weird comic geniuses, his recent reunion with Paul Simon and his quest for the perfect Simon and Garfunkel cover song.