Pogue Mahone
Clarkson
South Park. Maybe animation is the exception.
Seems so.
Anyone got any theories why?
I reckon that actors get just as tired as the rest of us from wringing every last drop of humour out the various quirks in the character they play. Voice artists can probably get away with posting in their performances but it's impossible to find a script funny when you can actually see the haunted look in the eye of someone delivering a gag they don't believe in.
NOTE: This theory might well be a load of old bollox.