Actually, here's a general request: Sell me on your all-time favorite RPG and why everyone on this forum absolutely needs to play it. What makes it the best?
For me, I would highly recommend the following:
Crown of the Magister - One of the best modern technical interpretations of D&D I've ever played. admittedly the first story was very linear and the dungeons were, for the most part, very small. Still, overall the game was fantastic. And the DLC was quite good and not as linear.
ToEE - Admittedly a quite old game, and fairly broken on launch. If you download the C08 patches it gets MUCH better. And yet another fantastic interpretation of D&D, albeit an earlier one than BG3. And the story is fairly light. But as far as dungeon crawlers, it is amazing. There are even several C08 additional content packs worth playing.
And if you want to REALLY Old School, try out the original Gold Box SSI games. You can get them on Steam for pretty much a song (I think I got the entire collection for less than 10 dollars US, containing something like 15 games).
Pool of Radiance (SSI Gold Box) was fantastic and well worth the playtime. Curse of the Azure Bonds has it's issues but is still worth the time Secret of the Silverblades is FANTASTIC and my favorite of the bunch Pools of Darkness was quite good but suffered from artificially spiking the difficulty using BS methods.
The Krynn SSI games are also tons of fun, particularly if you enjoy that setting. Admittedly, towards the end they start relying on cheap tactics to artificially increase difficulty, such as making every other monster level draining undead that are highly resistant to Turn Undead. But if you can get around that, you are in for a great time.
The "Into the Wild" set from there is pretty good, but the other two settings were better.
The Eye of the Beholder set was variably pretty good as well. The first one is the best, but the others are worth playing.
And if you haven't experienced Hillsfar? Oh, boy are you in for an experience.
