Muscle McMannus is by far the best IMO.
Consistently entertaining posts, great sense of humor....he just "gets" it... His self-deprecating humor is brilliant at times....and whats really funny is seeing the clueless people who will try to put him down for it.
Pretty much everyone else is hit or miss.....although EVERYONE on here has made me laugh at some point or another...and that is what makes this THE best forum on the internet.