I was traveling on a red eye the other day and encountered a situation i've never been in before. It also got me thinking -- when is it appropriate to recline? I've seen people recline on the taxi way (which I definately know that you're not supposed to do), recline as soon as the nose pops up, or recline after the seatbelt light pops on. I was exhausted and after popping on channel 9, I was dozing off to sleep in E+. I heard that we were climbing to 2,000 feet and reclined my seat. 10 seconds later, my seat violantly shook -- at first I thought we were crashing and immediately braced for the crash position. It turned out the person behind me was freaking out that we shouldn't be reclining seats yet. I was not too happy after seeing my life flash through my eyes and propped it up and went back to bed. She then woke me a second time telling me that I wasn't FULLY upright by a few centimeters. I didn't want to start a fight so I just obliged. In all my years of flying, I never thought about when it is okay to recline? I figure once the plane is in the air, the odds of us in need of orderly evacuation without mangled seats are very slim.