1.Coneheads
2.Waterboy
3.Blended
4.Big Daddy
5.Happy Gilmore
6.Grown ups
7.The Animal
8.Hot Chick
9.Click
10.Billy Madison

I dont see a problem with that. I mean he did perform in them so I dont see why not.
-On October 3rd He asked me what day it was "What day is it?" "It's October 3rd"-

Do I count films where he is minor in them?

Hmmm i would have to go with
1.Happy Gilmore
2.The Wedding Singer
3.50 First Dates
4.Billy Madison
5.Just Go With It
6.The Waterboy
7.Blended
8.The Cobbler
9.Click
10.Little Nicky
-On October 3rd He asked me what day it was "What day is it?" "It's October 3rd"-

1. The Wedding Singer
2. Hotel Transylvania 2
3. Hotel Transylvania
4. 50 First Dates
5. Happy Gilmore
6. I Now Pronounce You Chuck & Larry
7. The Waterboy
8. The Longest Yard
9. Mr Deeds
10. Click

He's only been in one good movie and that was Punch-Drunk Love which isn't even in your top 10 lol.

An utterly laughable list 50 1st Dates, Anger management, GROWN UPS 2, Pixels, Just Go with it, and Blended are terrible terrible movies, even for Sandler movies they're terrible.
"We stayed up all night dry humping, it was awful, I think she gave me poison ivy."

In approximate order of release, these are ten I most enjoy. I'm leaving out good movies that weren't starring vehicles for him, like Coneheads and Airheads.
Billy Madison
Happy Gilmore
The Wedding Singer
The Waterboy
Big Daddy
Little Nicky
Punch-Drunk Love
Eight Crazy Nights
50 First Dates
Just Go with It and Blended (Tied - almost the same movie)

1 punch drunk love
2 happy Gilmore
3 billy Madison
4 water boy
5 big daddy
6 50 first dates
7 reign over me
8 funny people
9 click
10 the longest yard

I know many may disagree with my choices, but I like more of his serious roles. Here's my list
10.Punch Drunk Love, Reign Over Me(tied)
9.Click
8.The Wedding Singer
7.50 First Dates
6.Anger Management
5.Just Go With It
4.Grown Ups
3.Blended
2.The Ridiculous 6
1.Spanglish

1. Just Go With It
2. Happy Gilmore
3. 50 First Dates and Blended
4. Chuck and Larry
5. Anger Management
6. Grown Ups 1&2
7. Jack and Jill
8. Billy Madison
9. Wedding Singer
10. Big Daddy
11. Click
12. Mr Deeds
    All of them after #5 are tied, like them all the same I guess.
    "Tell me, do you bleed? You will."

Top to bottom
Click
Grown Ups
Thats my Boy
Happy Gilmore
The Waterboy

Didn't see Chuck and Larry. Click was almost 10.

Click should be on that list and Chuck n Larry too

The numbers are the IMDb Ratings

If you gave Happy Gilmore a 7 out of 10, and your #1 only has a 6.8 out of 10 shouldn't Happy be #1 then?
I don't think you understand how to count to 100