If your a big fan of bioshock the second one is definately worth getting for the story and the experience from another chartacters perspective.
I found a couple glitches with the pc version:
at one point through the game you need to use a recording to unlock a door but before you do you need to do a bit of travelling about during which time any other recording you pick up along the way wouldnt play or would just freeze completely.
the second glitch which kinda killed one of the tonics occured when you switched through multiple plasmids quickly your hand would just lock up stopping you from using any plasmids at all. the tonic thats mainly effected is the one that reduces the amount of eve used significantly but disarming most of your wepons ... obviously you can guess its not the best thing to happen during an intense battle.
All I can sugest if you run in to this problem is to go straight to a gene bank and take a plasmid out of its slot and put it back in which should reset everything by automaticly switching to the new plasmid.