I have 6 Pokemon left to catch in Pokemon Diamond. This is only counting released Pokemon.
Remaining Pokemon in order:
196 Espeon
197 Umbreon
249 Lugia
250 Ho-oh
485 Heatran
487 Giratina
My plan is this. I am training 6 pokemon to all be level 76, then going through 100 battles in Pokemon Colosseum. Then at the end I get Ho-oh, also, 3 of the players in my party are Umbreon and Espeon. That knocks off 3. Then I have to go through the entirety of XD Gale of Darkness on the Game Cube to get Lugia. The last two are legendaries in my Pokemon Diamond, and I plan on holding them off until the end.
This is taking far too long.