That's the one thing that's turned me off off Palm. There's not very much "Power in your Palm" vs. the "PC in your Pocket". You can do a whole lot more on a PPC then you can on a Palm, even if the interface sucks and there is no real Task closer/switcher...
Oh, and you CAN play [albeit a very buggy version] of Palm on your 320x320 display.
http://yoyofr92.free.fr/ hosts ZDoom, ZQuake, and...ZSomethingElseICan'tRemember..oh yeah, ZHexen