Started up Burial At Sea. Nice to see Rapture again, and it feels like a decent sized game for DLC. Nice big environments to explore, and a good story to keep you interested. My only problem is with the respawning enemies. In the other Bioshock games, you could clear an area, and then explore without a hassle. In this game, it seems like the enemies respawn every time you enter and exit an area, and it gets annoying when you're just trying to look around for all the extras, like audiotapes. On top of that, they've made the enemies stronger, and have made the ammo/items scarce, so you can find yourself running around helpless, desperately trying to melee them quite often. I figure that was done just to lengthen the experience, and not have you breeze through it in under an hour, but it's still annoying. I like to get a breather in Bioshock games, to just take in the world and explore.
All in all though, I'm enjoying it. It's still more Bioshock, and that's always a good thing.