The 737-800 offers an average pitch of about 31 inches (Seatmaps.Net was unable to obtain exact data). There is an audio entertainment system on the aircraft. You can purchase headphones or bring your own, but you will need a Y plug (the kind that has two 3.5mm pins on them. Lufthansa uses these on many aircraft as well). Adapters can be used. Also, there are video monitors above the aisle. The first monitor is stowed away for takeoff and landing, so if you'd like to see the airshow map and flight data during this time, don't pick the first couple of rows. A warning: On many Air Berlin flights smoking is permitted in the rear section. Due to the air circulation on board, smoke may be a problem behind row 12 or so.
While this row offers additional room for your knees, it is a little cramped in the foot area. It seems that if you take off your shows, you can put your feet up against the wall without being yelled at by the crew. The big advantage of course is the fact that nobody can recline into you. You might have a little trouble seeing the viedo monitor, since the angle is a somewhat unfortunate.
Acceptable Economy seats with a pitch of about 30-31 inches.
These seats in the smoking section have limited recline.
These seats have a limited recline due to the exit row behind them.
Plenty of legroom due to the exit row makes these seats desirable. Unfortunately Air Berlin will not accept ASR requests for these.
These seats have additional legroom and the nice 2-2 configuration that couples like. Unfortunately Air Berlin will not accept ASR requests for these.
Window seats in row 16
Since row 15 has only 4 seats abreast, you get additional legroom in these seats.