'Glee' Star Happy He's Mistaken for Someone Else

Cory Monteith -- aka Finn from "Glee" -- is not exactly a household name yet ... and he won't ever be if he keeps telling people he's Chris Klein.

[[tmz:video id='0_uv09ml9w ']]
The "fans" who wanted his pic didn't care who he was -- they just wanted a photo with a celeb ... whomever he may be.