The actor was a surprise guest at the ninth annual Johnny Ramone Tribute event at Hollywood Forever Cemetery, and stuck around to watch the John Waters movie, which was screened on the wall of the famous graveyard's mausoleum.
Depp joined a question and answer session featuring Waters, co-stars Traci Lords and Ricki Lake, and James Intveld, who provided Depp's singing voice in the film.
Johnny Ramone's widow Linda, who posed for photos with the celebrities paying tribute to her late husband, was thrilled by the turn-out, telling The Hollywood Reporter, "This event is something Johnny would have loved. Having these amazing autograph signings and screening cult films -- this is what Johnny was all about."
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