Do you love RPG's? Did you never get to play Baldurs Gate, or do you want to give it another spin? Then you should definitely get this. The only thing enhanced edition does worse than the original classic, is that the cut-scenes are actually arguably worse now. Except for that, though, it makes the game easily available for you on a modern PC, and it uses the BG2 engine, allowing easy exporting of your character to the second game. It also lets you use many mechanics and features from the second game in the first one.
For those of you who haven't played the Baldurs Gate series, I will try to keep this relatively spoiler free, and warn you otherwise: The game is looked on as one of the great classics for a reason. It puts you into the shoes of an orphan, who (semi spoiler for the first half hour of the game) is forced to leave the town he lives in with his foster father, who is murdered shortly after leaving by a mysterius figure in a fully plated spiked armor. Initially alone in the world, except for your sister Imoen, you must find friends, overcome the dangers of the world, discover your heritage and face your destiny. Over the course of this and the second game you will come across and interact with dangerous and fantastical creatures of all kinds. Everything from goblins and orcs, to dark elves and dragons, and even demigods.
Baldurs gate is based on Dungeons and Dragons, and has you picking a gender, race, stats, class, and appearance. There are dozens of options here. You can be a fighter, a wizard, a rogue, a ranger, a druid, a monk (the smash stuff with your fists kind), a berserker... the list goes on. Similarly there are dozens of races to pick from.
As you play you will rack up experience and level up your characters. Along with yourself, you also have to control the leveling up of your friends, and kit them out in the gear you come across (which there is *plenty* of). If you put in the same amount of efforts in the side characters as your own, the game will let you fully experience more classes than just the one you pick for your main character.
Unlike other RPG's that just have enemies improving in strength to follow the pace of the game, the progression here actually makes sense (you won't find a last boss that is ten times as strong as the first boss, even though they should thematically be at the same strength). The first game will not see you face creatures like dragons, but there will still be plenty of challenge. If you come across an encounter which rings alarm bells and makes you think "this looks bad" - it probably does. The game is open for free exploration, and if you rush a location with powerful enemies, you will die (unless you cheat, or know exactly what you're doing for a speed-run, obviously).
Talking about free exploration - there is so much more to do than the main quest. In the spirit of old classics (well, it is one, but regardless), it has a plethora of side quests. You will never have a shortage of things to do. Almost every single location in the game (and there are a *lot* of them) will be involved in a quest in some way. The game is obviously limited somewhat by it's age, but it truly feels alive. The one exception is that you will probably find yourself robbing almost every house you come across unless you are role playing *really* strictly. If someone spots you going for what they consider "private", though (usually stuff that is locked), they *will* call the guards.
Give it a spin. If you enjoyed it, get the second game (enhanced edition) as well. It will have you pick up where the first game left (well, shortly after), and you can import your character to it to continue your journey. The second game is *considerably* longer than the first game, and is generally considered a better game. I highly recommend playing this one first, though, as it's definitely a good game in its own.