I'd have to agree with everyone as far as the Fallout games both old and new, Persona, Planescape, and Borderlands (I'd recommend Borderlands 2 over the original; the gameplay is more polished, the atmosphere is funnier and more committed to parody, and the story is deeper and doesn't require playing the original to follow). I'd add that if you like strategy games and can tolerate extreme level of weirdness, the Disgaea series is a personal favorite of mine. Also, if you enjoyed Pokémon, you might consider digging out one of your old games and doing a Nuzlocke Run. [http://nuzlocke.com/challenge-comic.html]
Also also? Great avatar.
EDIT: You mentioned you have a PS2? DEFINITELY check out Mana Khemia. It's a spinoff of the Atelier series about a school for alchemists. The focus is primarily on crafting items, which is done through a super-addictive process that I would call a minigame if not for the fact that it's the focus of about half the playtime. The combat is turn based, but it has a really cool and innovative twist- there's a row of cards that progress across the top of the screen, each one representing an action in combat, and certain characters can manipulate them to, say, make your other characters attack sooner, or do bonus damage based on the number of blank cards, etc. It's a great game, so much so that it genuinely makes me regret getting rid of my PS2.