I usually have only one at a time. I make sure I only start on a new project after I have finished the one I'm working on so I never have UFO's. The problem is that I have 9 table runners I'm doing for Christmas presents. I have 5 already pieced, 2 that I'm piecing now and 2 left to cut. I plan on having them all sandwiched at the same time so they can all be quilted together. I hope it still counts as one project since they are all the same pattern, just different colors.
I have one D9P that has tried really hard to turn into a UFO. That one needs to be sandwiched and quilted as well, hopefully by Christmas.
I have 2 baby quilt that need to be done after Christmas and starting in January I'm going to make a big sampler for a girlfriend of mine who lost everything in the recent floods in Pennsylvania. I'm making it to honor their "housewarming" when they can move back into their house which won't be until at least October 1, 2012 so i have a while to work on it yet.
Thanks for starting this thread so I can put everything in order!