Actor jumps on NYC stage and launches into stand-up set under fake name

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Actor jumps on NYC stage and launches into stand-up set under fake name

A Hollywood actor took the mic at a New York City comedy stage unannounced and launched into his full stand-up set under a fake name, The U.S. Sun can reveal. The star has been frequenting the iconic Comedy Cellar, and he has brought a fellow A-lister with him to the sets. GettyThe Comedy Cellar is an iconic setting where many big-name comics got their start[/caption] GettyWill Arnett has been going to the Comedy Cellar in recent days, but oddly…