The top 100 list has already been posted, but I thought this article makes some interesting observations on the list.
Overall the variety of games and experiences on that list really show how versatile the deck is, and that people can still have a great time with games that aren’t a perfect experience on the deck.
We’ve come a long way, games on Linux used to require a lot of research to see if they would work. Now, except for some multiplayer games, I just buy games and assume they’ll work
It’s also nice that you can easily return games if they don’t run well on your system (at least with steam).