Constantly putting periods in the middle of sentences instead of at the end. Seems to think "call them" is one word, spelled "c-o-l-u-m-n." Keeps confusing the words "humor" and "rancor," and continues to believe "witty" and "petulant" are interchangeable, preferring the latter in both instances.
Unlike Gleason, he's at least technically proficient, in my opinion. It's the formulaic approach to his vomit spewing that I find nearly as intolerable as his point of view.