I had my first flight experience with the DirecTV last night! The 9 pm flight IAH -> SFO has it installed, and wow, the display quality is pretty nice. I like their "Guide" menu because you can browse channels by interest area instead of scrolling up and down forever. Had no bugs on this flight.

In January on JetBlue, there was a bug where no one on the right side of the plane could change their channels, and it was stuck on the JetBlue / NYTimes advertisement channel. It only a 60 minute flight, so it wasn't worth complaining about, but I was surprised that a flight attendant didn't notice that one side of the plane was watching the same channels.