1- Might be my crappy work monitor, but I see next to no texture in the black pants / shirt. This makes it look like floating arms, legs and head. Not sure what you did for exposure, but it looks off.
You also have some blown out whites in the guitar. Could also be that the image has some bright spots and some very dark spots...ie a high dynamic range of contrast.
I'm also not liking the blurry light coloured background on the right hand side. I first see this light section and it competes with the actual subject for interest.
2- Same contrast / black white issues as with #1. I'm not liking how the subject is blurry but the guitar is in focus. Might of been an artistic decision, but its not one that I like.
3- Same contrast / black white issues as with 1 and 2. The bottom is so bright, its bothersome. The swinging guy is also blurry and I dont like how you cut off his legs
4- Interesting concept, but I would of liked them a bit less blurred. Although if your shot theme was drunk / drinking, then this fits nicely.
5- Not liking the darkness of the image. The guy on the left's face is totally gone. Need more light coming from below or just a tad in front to light up those faces somewhat while still keeping minimal shadows