I liked The Other Guys and Land Before Time a lot. The only movie of his I've hated is the one where he's an ice skate dancer or a basketball player or something. I also thought Old School was not as funny as everyone said but I may just need to re-watch it.
i thought old school was actually a
good movie, rather than "just" a funny movie; and anchorman was awesome. the rest (from elf to other guys to blades of glory) each had some funny moments in them, but i found them to generally be unfunny and poor movies. and, for the most part, it seems like they're all the same character - not that he was othello or macbeth in anchorman and old school, but at least there was a bit more development to each.