Hey, great post...I have a few of my own too on my trip to LHR:
Air France and Air Algerie 737s
Lineup of 737s and A32x at LHR gates
View out of my window on Air Canada A330-300 C-GFUR at 39,000 ft.
Stade Olympique and the tower on approach to YUL
None of these are probably good enough for this site though...