Hmmm so many to list where to start.
Well Sin I must say that some of the titles in your list are a little odd but I do get the humor that you have seen in all of those. Right now I would have to say that 99% of that list I found alot of humor in.
So here it is, my partial incomplete list of funny movies:
Evil Dead 2: Dead by Dawn
Amry of Darkness
Sherry Baby (hell all I could do is laugh at that one, there is no taking this one seriously)
Land of the Dead
National Lampoons: Van Wilder
Eurotrip (damn that Scotty doesn't know song!)
An Eveing with Kevin Smith
Monty Python and the Holy Grail
Cherry Falls (Virgin NOT!)
Gwaa this list could go on for days, I will stop for now and come back after seeing some of the other responces.