I held off on getting this game at launch, as I heard it was riddled with bugs. Two years later, I saw it at a local store in the Gold package for $30, and just couldn't turn it down.
Wow. Just wow. These guys REALLY know how to tell a story. The original campaign is pretty good, but the expansion (Mask of the Betrayer) is something else. It currently stands as one of my top RPGs ever, rivaling Planescape: Torment.
The gameplay is fun. The camera is a bit obnoxious at first, but once you play around with the options you can set it to better suit your needs. You will need to make adjustments every now and then, but I really didn't find it to be as bad as some people make it out to be.
I've read horror stories about the glitches, but in my playthrough of the OC and MotB, I only had one. The game hung during a map transition, and I had to reboot my computer. Luckily, I had a save ten minutes prior. Keep in mind, this is ONE problem within 50-60 hours of gameplay. Not too bad in my opinion.
If you're looking for a fun RPG with a great story and INCREDIBLE character development, pick this up. You will NOT be let down.