well, i'll throw the upper ones into the wind. i like my rpg's old school snes rpgs, sega gen rpg's. so we'll get all the big names out of the way first, some or most have already been said, so you can either check them off, or ignore them. mass effect, dragon age, deus ex, gothic, witcher, the elder scrolls, avernum, torchlight, neverwinter nights, dungeon siege, system shock, fallout, bioshock, sw:kotor, fable, boarderlands, ys, kor: rekoning, divinity, risen, two worlds, genforge, drakensang, arcania, etc.
new games; "dark", a weird retro rpgish game, looking foreword to it. "ff7", newer than that version they released a long time ago which i still have the dics to. speaking of which, i think i have ff8 along side it. pc versions, lol. still sad that ff9 or any others didn't come to pc port. a few other rpg's have crossed my screen a few times, some are indie old school style. mid 2k era. and some are cartoony or super graphics. also, many others that some might not consider a full rpg because they lean towards fps, stratagy, beat'em up and a few others. but, you'll enjoy them as much as an rpg non-the-less. keep an eye out for new rpg's that may becoming out this year or the next.
just keep away from the ones that look like they were made in that rpg maker crap they try to sell ppl a game they made for free by tweeking premade stuff.
and hopefully i didn't say everything that was already said and gave a few new ones to the list. there is a lot that i have on my steam that i didn't list, because either i never played them, or i don't quite see them as an rpg standard that you're looking for. even thuogh many of the games above and unmentioned. i already have. i also have many that i'm growing out to my 360. and eventually probably either new gen or ps3/wii. i like the tales series since the ps1 days and the old ff games. snes, and ps1. (it got weird in ps2-3) also, if there's some mmo's that have rpg elements. both p2p and f2p. and many ones under the radar of main stream gaming and also some that are console only. dragon quest is a good one for an oldy, i think they flopped on their last one since it was a short wii game. both all the numbered games i remember being good.
i could be here forever if i move on to console games. well, take a look through the top part, if you see something that no one added, that added to a game to look into. even if it turns out to be crappy. most the games listed were part of a series with more than one game, so you can probably see what you like if you like something of a series. or you could go between to see something new.