My official case arrived today... it's pretty good! Fits well, nice quality, padded, and it has magnets at the front so that it snaps down over the screen and doesn't flap about, I'm liking it an awful lot (even though it is damned expensive over here!) I'd definitely recommend this, particularly if you can pick it up for $21+tax.

I also bought a Nokia CA-100 USB charger adaptor - works fine with the N800, I'm charging it now from a computer which only has an old USB1.1 socket (it's my Linux PC which is based on a dual processor Slot-1 server class motherboard - a bit long in the tooth...!)