Normally I like to be across the divider from MrD, last flight we were across the aisle from each other in the aisle seats.
Apart from the high demands of my 'divider mate' on the crew and the fact he had to be told to sit down by a crew member moments after touchdown at LHR (which was roundly ignored- luckily I didn't end up with a case landing on my head).
I found it quite easy to ignore this rather boorish person before I promptly pressed the up button after the safety video.
It does surprise me how many people don't know that you can put the divider up after the video and sit there waiting for the seatbelt sign to go off.