I usually carry two laptops when I travel as well and Security can be a bit of a pain, since each laptop needs to go in it's own tray, but I've been getting pretty good at it lately.

The best technique I've found is to take a stack of three empty security trays and put my laptop bag on the counter next to the stack of trays. Take one laptop out and put it in the top tray, then take that tray off the stack and set it on the counter. Take the other laptop out and put it in the next empty tray, then stack that on top of the tray with the first laptop. Finally, put the third empty tray on top of the new stack. I put my shoes, keys, cell phone, etc in the third tray. That way I only have my laptop bag and a stack of three trays to push down the counter and when I get to the X-Ray machine I seperate my trays and put them through one at a time. When they come out of the machine I re-stack them and repeat the process in reverse.