Thought this might be of interest to you :)

http://www.nasa.gov/home/hqnews/2010/nov/HQ_M10-167_Astrobiology.html

Thanks! I follow NASA on Twitter, so I'll probably get a heads-up on the day.

If you come down to Houston area sometime, we have some used space suits on display at Space Center Houston. You can see how they evolved as crew needed better mobility or visibility. Today the system is a three piece garment; a cooling tube lined set of long johns and then the waist up and hips down halves of the suit. It still requires another astronaut to assist in getting in and out of it.

For lunar use, the plan was to use something like the Russian Orlan suit. It's a single piece that you enter through a door in the back. The suit would then simply lock onto a docking port on the hab module or chariot module and would never need to enter, thus eliminating the problem of lunar dust accumulating in the habitat and people's lungs.