Mmm, this is such a great debate.
I wouldn't know too much about this list as I haven't watched more than half of these movies (like, all the foreign ones). I'm surprised (500) Days Of Summer is up there, as it wasn't too funny. I can list a million movies that are funnier than Days Of Summer.
And Dr Strangelove definitely belongs up there. Great movie, has one of the greatest comedic actors of all time, Peter Sellers. I'm kinda disappointed that one of the Pink Panther movies aren't up there, but, eh.