[Picky Fan Mode]
Well, he seemed pretty hungover in TUC:
"You know anything about a radiation surge?"
"Only the size of my head."
"I know what you mean."
[/Picky Fan Mode]
There were also several other scenes where he came accross at least to me a little klutzie e.g. running form the monster on the planet where Spock prime was on and Scotty.
Just an impression.