Well, I finally got my hands on the demo thanks to PC Gamer. I installed it, it didn't work. I spent a couple hours looking around for fixes, and finally I'd solved it (DX9, old graphics card driver and GOMPlayer were my problems). And then it all worked perfectly!
And I have to say, it really is excellent. Played through twice now and I really love it. The plasmids are great and the splicers/sisters are really strange and freaky. The whole storyline bit seems good, even though I've only touched on it. And the graphics are amazing, even though I have everything on low (did go on high just to see for a bit though). I'm not a great fan of the guns, but hey, there must be some things you don't like!
I'm not going to buy the game yet though, I want my new rig first. Then I can play it on better settings!
Sure, this thread has no real point. But I just wanted to say how the game (well, demo) is great and that 2K have done a good job (even though there are quite a few problems).