Thanks for all the feedback. 1 and 2 were my favorites. I included 3 because it seemed like that was my friend's favorite, though I wasn't very happy with it (for the reasons you guys noted).
1, 3, and 4 were taken with a manual focus 85mm lens. It's the first manual focus lens I've used and I am finding it to be a bit of a challenge. I also don't have much experience with shallow DOFs. Probably a bad combination, but I figure I can get there with some practice. Next time I'll put the camera on my tripod to see if that helps. I kept going back and forth trying to figure out whether I missed the focus in #1 or it was just soft. This lens is a bit softer than my other lenses, so I think I may have gone a bit overboard with sharpening to try to match what I'm used to. I think I may have to spend some time figuring out how to make the most out of its capabilities.
2 was taken with my 16-35 at 16. It's a crop of an image that was taken in portrait. Maybe I'll try a different crop in portrait to see if I like it more.
I guess I'll just have to go practice some more. Darn. 
Constructive criticism is always appreciated.