Cannot limit it to 3:
But being an Adam and Dustin fan boy my take
Top 3 Adam Sandler movies
1. Uncut Gems
2. You Don't Mess with the Zohan (feel good movie and i can rewatch for the nostalgia, it brings back watching this in the college dorm in France with a bunch of people smoking weed and cooked some food after)
3. Happy Gilmore 1 and 2 (I like happy movies where the protagonist wins

)
Top 3 Dustin Hoffman Movies
1. Tootsie (1982) - Master class
2. Kramer vs. Kramer (1979) - Its something else, hits you hard differently on every 5 years rewatch . Saw it first when i was 17 yo
3. Wag the Dog (1997) - Nice political Satire with multiple undertones
Dustin and Adam combo:
The Meyerowitz Stories
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Top 3
1. Once Upon a Time in Hollywood (This movie hits me differently because i went into the rabbit hole of documentaries about the Family, Manson Murder etc prior to watching it)
2. The Irishman
3. Bullet Train
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Series I am watching now are Slow horses, The morning Show, Shrinking, Severance and waiting for Rick and Morty
Recommend these for any one that love bit of comedy, drama and some action
If you havent watched Tootsie this is a spoiler