Yep, I use my Ipad as an overly expensive movie player. Hey, the screen size & video quality is great, along with the battery life. However, I left it on the plan when I arrived in HKG -- realized I was missing it before going through customs screening -- and beat feet back to the plane and reboarded (thought I would be stopped, but no issue) and found it still plugged into the power port where I was sitting. The heart was beating a bit more than normal with a nice relieved feeling once I grabbed it.
But did managed to loose an Ipod 32gb unit in my seat on the way back home. No response from United lost & found.