Dave Chappelle made a rare appearance last night in New York when he joined Chris Rock onstage at the Comedy Cellar, the Comic's Comic reports. Chappelle has spent the past week in New York, dropping by the famed club – one regularly featured in Louis C.K.'s show Louie – to test new material. Last night, after midnight, the elusive comedian took the stage for a solo 45-minute set and then was joined unexpectedly by Rock.

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The duo spent an hour loosely zinging jokes back and forth, going after Seth MacFarlane and Jay-Z's friendship with Barack Obama. Rock texted Jay-Z around 1:30 a.m. and asked if the rapper would like to get some spaghetti. Jay-Z didn't respond, so Rock and Chappelle rang up Lenny Kravitz and Arsenio Hall and left voicemails.

Chappelle and Rock even teased the crowd by suggesting a joint tour. "Come out to Oakland," Chappelle said to Rock. Replied Rock, "You should come down to West Palm." Chappelle responded, "After next Tuesday, I'm free for like 11 years."

Rock noted that he's busy with a new film this spring but left things open. "By Halloween, I could do dates," he said.

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