It really depends on what you're looking for.
Are you actually looking to roleplay within a game, or do you just want to be fed numbers?
If you are looking to roleplay, you really could do worse than Planescape Torment. The combat and graphics are weak, as they should be for an RPG, but the story is amazing and it is WIDELY open to player choice and interpretation. Every playthrough will be different the first five thousand times you go through it.
Also, as for the Elder Scrolls series, I really cannot recommend the second game high enough. Skyrim is honestly pretty lame and shallow, I can't recommend it whole-heartedly. Daggerfall is so massive and so outstandingly deep that you will grow a deep seated resentment toward the rest of the series for not attaining an ounce of that ruthless, bug-filled ambition.
Just download from here, and use DOSbox. You can run it via shortcut with the downloader from this site. http://theelderscrol...gerfallSetup_EN
Deus Ex is also a classic from a roleplay perspective, and the first seven Ultima games are incredible. My personal favorites are 4 and 5. 7 I don't recommend that much, and that seems to be the one that everyone adores. Avoid 8 and 9 at all costs, along with Ultima Underworld 2.
The first two Fallout games are also fantastic, as is Pillars of Eternity, Neverwinter Nights, and Baldur's Gate.
There's an ocean of great roleplaying games out there. Sadly there isn't many good recent ones, mostly because they put a sharp focus on the visuals and action when they shouldn't. Though there is Dragon Age Origins and The Witcher series. I don't recommend any other game in the Dragon Age series, however. Origins was bold, involving such a forked and involved narrative. It really felt like every ounce of dialogue and every given choice really mattered.
Also in terms of classic games that didn't involve a lot of roleplaying, Dark Sun: Shattered Lands is incredible.
If you're a fan of Grand Strategy Games and games that are WAAAY overly complex and deep (as you should be, if you're asking for RPGs), Crusader Kings 2 is incredible. It's medieval politics, the game. Complete with syphilis, castrating your children for fun, assassinating your brother for power, setting up favorable lines of succession, etc.