ARM can be used in both little endian as well as big endian mode if I'm not mistaken. So can MIPS (which is actually used a lot in networking gear, as it turns out). That little endian mode is used on the N800 can sometimes be useful for us x86 PC owners, at least in principle - some data files can be used transparently on both, and there are less problems with porting some little-endian-only applications.