He's funny

Zach is a funny guy! I like it when he gets all spazzed out and flustered yelling at people like he just drank a bucket of coffee. His Felix character in Bob's burger cracks me up every time

I'd love to see a movie focused on Tom Cruises character from Tropic Thunder, with Zach playing his spun-too-tight personal assistant that somehow has an even bigger mouth than Cruises character. Or maybe they could be tweaked out rivals, that would be funny too. Basically just give Tom Cruise and Zach Galifianakis a bunch of cocaine and film them yelling at each other for a couple hours and it will make bank.

Zach's Felix character needs some interns, and Felix should be the worst boss there ever was.

I like his tweaky abusive yelling guy character best when the people he's yelling at are terrible people who deserve to be yelled at or more. I think he'd be great on It's Always Sunny in Philadelphia, yelling at the gang. Maybe he could play the extremely angry gay boyfriend of the corporate guy the gang keeps kidnapping and taking to a strip club.