DS graphics are disappointing to say the least.
Yeah, they don't even hold up to the N64 without texture filtering.

Not to knock it, as I'm sure it will sell a bazillion units, but very few things about the DS design seem smart to me. Two screens? I'd rather have one larger one. Stylus as analog control? Just give me two analog sticks, thank you. 3D that can't even hold up to the consoles from 8 years ago? Ouch.
Lest you think I'm some sort of PSP fanboy, I also think Sony is going a bit off by trying to make their unit a do-everything solution. I don't want to watch movies on a handheld, especially when you have to buy them on a proprietary format. 2-hour battery life? Suck. Launching at twice the DS's price? Not for me it isn't.