I must be crazy but I make sure I am there 2 hours before the plane leaves. I figure I can dub around on the laptop or my ipod while I'm waiting. At least I know I will get through security, have enough time to pick up some food/drink/whatever before I go. That said, I don't fly much...just once a year to Australia from Boston so I do have plenty of time to waste getting there as my flights usually don't leave until 5pm or later Eastern time.