There's a video on YouTube of WORDLESS celebrity impressions. The guy does impressions of different celebrities and famous characters, just using grunts and gibberish. ANSWERS BELOW THE VIDEO...No PEEKING!

 

They are: Doc Brown from "Back to the Future", Alf, Michael Cera, Seth Rogen, Ray Liotta, Arnold Schwarzenegger, Mr. T, David Lee Roth, Marge Simpson, Grover, Yoda, Kermit, and Miss Piggy.