Originally Posted by exerda
I recommend that if you have family with you, have one go through ahead and one behind you so they can keep an eye on your laptop as it goes through screening. Personally, I've never had a problem, but it's helpful to avoid mistakes--people have walked off with the wrong laptop before--and to be wary of possible theft.
Easy way to avoid the "identical laptops" issue - tape a business card to the top and bottom of your laptop. I've got a ThinkPad, just like everyone else, and it helps.