Pick your favorites:

Licking his lips. 
Scratching his hand. 
Fidgeting in his seat. 
Patting his hair. 
Rubbing the front of his leg. 
Straightening the crease in his slacks. 
Adjusting his tie. 
Talking with his hands. 
Clasping his hands. 
Saying ... "Well ..." 
Saying .... "Um ..." 
Saying ... "Uh ..." 
Saying ... "Well ...um ... uh ..." 
Crossing, then uncrossing his legs. 
I never noticed those things.
I have never seen Kevin on television. 
I haven't seen him interviewed enough to detect a pattern.
I always notice something else. Fill in below: