Continuity mistake: The salad on Eliott's fork changes from purple to green and back to purple between shots.
Continuity mistake: Elliot's "Naked" drink changes directions a few times without her touching it while talking to J.D. (00:16:10)
Continuity mistake: Laverne's soda can goes from being on her notepad to on the table between shots.
Answer: This is an American comedian called Scott Thompson, more widely known by his stage name of "Carrot Top".