im am just VERY excited for the psp,and not the ds.i used to like nintendo until they started screwing up.i think very few ds games will exploit the second screen in a truly cool and intriguing way.nintendo will go over its head to implement by raw force into every single game it makes.
i also think it was really dumb of them not to make it the new gameboy.3rd pillar?wtf??they will spend a year or so selling the double screen as the best thing in the world like they did with the gba-gc connection thingy,until someone taps them on the shoulder and explains how things work in the real world.
plus,you know what it'll be:multi platform games will shine on the psp and be crappy in comparison on the ds,wich will have some forcedly implemented double screen features.plus,with nintendo it'll be ports of n64 games,and more bloody mario games,and mabe some zelda thing,obviosly some kind of mixed double port ,because in case noone noticed,they only have funds for developing so many new games a year without using old code form mario games.
sony already stated it will push new original games on the psp and dicscourage/block companies simply flooding the thing with remakes.so there.
another small thing.just because the psp has super graphics,doesn't mean it won't have simpler 2d games,so i don't see how the ds will be the place for 2d games buffs.actually,there is already a 2d rpg in the psp lineup.it only means both 2d and 3d games will look much better on the psp.