I like lots of extra pages and content in my planner: conversions, international phone codes, maps (lots of maps!). I especially like local- and country-specific content in my planners, like in my UK Quo Vadis diary, my Russian diary and my Diary 2000. But I realize not everyone likes these pages taking up planner space.
Do you like extra pages and content in your planner? If so, what?
And as always on Fridays, feel free to discuss anything planner-related!