Some celebrities do their best acting when there are no cameras in sight.

Take the time Elizabeth Banks was out in Toronto, "and a guy walked up to me and said, 'Oh my god, my girlfriend loves you. She would die if I didn’t get your autograph. This is so exciting!'" the Hunger Games actress recounted to comedian Chelsea Handler while appearing on her Chelsea Lately talk show back in 2011.

But as he want on to praise her books, including 2005's My Horizonal Life , "I was like, 'Oh, he thinks he’s meeting Chelsea Handler,'" Banks continued. "I couldn’t ruin it for him!"

Dare we say it was a pitch-perfect response?

And should you commit a similar mix-up—like the woman who believed she spied Carrie Underwood , not Reese Witherspoon , dining out on barbecue—the o

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