Top 10 funniest movies of all time

What are the funniest movies you have ever seen?  Do they make this list?

1. Monty Python and the Holy Grail
2. Airplane!
3. Dumb and Dumber
4. Anchorman – The Legend of Ron Burgundy
5. Borat
6. Happy Gilmore
7. The Hangover
8. Step Brothers
9. Blazing Saddles
10. Superbad