Buy Baldur's Gate, Tales of the Sword Coast (expansion) Baldur's Gate II Shadows of Amn, and Throne of Bhaal (expansion).
Once you have done that download and install Tutu. It will allow you to play through the first game and expansion using the BGII engine, which includes all the new kits and what not.
The story in the game is continuous with you playing the same character in all the games and it feels very rewarding to playthrough all the games in order.
The games have an amazing amount of replayability. Your party members have something to say to almost every event that occurs or NPC interaction no matter how small and they work off each others dialogue. You could replay the game several times just to mix parties and see how they react to one another.
I used to be a bit of a Baldur's Gate fanatic, somewhere around here I have a journal where I recorded some of my favorite party interactions and quotes.
A few of my favorites.
Viconia: I miss the customs of my homeland, like the breaking in of new pleasure slaves. The largest and strongest were the hardest to break, but they were the most rewarding. Sarevok, I find your great size... intriguing.
Sarevok: Were you to break me Viconia, you might find nothing but the chill emptiness of the grave within.
Viconia: That does not repulse me as you might imagine. We drow are ever eager to broaden our... experience.
Sarevok: I orchestrated a war to slaughter thousands. I have felt the cold embrace of death. I have witnessed the horrors of the abyss. But you, Viconia... you scare me.
Viconia: Cowards everywhere I turn! If you find your courage, Sarevok, seek me out.
Korgan (a chaotic evil dwarf warrior): Nalia, ye're overtall, beardless, longlimbed and lack strength. Ye disgust me.
My favorite part in the game would have to be...
[spoiler:7a73b769ae] When you are in Spellhold and right before the battle with Irenicus you can choose to let loose all of the insane Sorcerers and Clerics to help you with the fight. Some of the dialogue there was hilarious.
(After Tiax an insane Cleric declares he rules all around him another insane girl who constantly sees visions of people from other planes says)
Girl: Is that the rule of all you survey, or beyond? What of those that walk inside, and around, and through? That stand where you stand now?
Tiax: None stand where Tiax stands lest he walk atop them![/spoiler:7a73b769ae]
Yeah I have an odd sense of humor I know, but that still gets me every time I play the game. Hearing the voices do it is even better.
On a final note, if you do decide to play all the games in a row and import your character to each new game I leave you with one tip:
Keep the pantaloons. Always keep the pantaloons.
