Should have a nice career of making noises in front of him...

im sure if you edited together any amount of noises that other actors make, you'd get the same thing.
I think he did a fantastic portrayal, the evil villain schtick has been done to death and putting any thing new on that tired old formula is bound to be critised generally because most actors that are hired are more bothered about celebrity than they are about expressing range or truly developing characters.
You may not be team eisenberg but you certainly couldnt do a better job than him so zip it......
in the politest way possible.