I should probably poke around there, then. For whatever reason, the only Arc documentation I've used is arcfn.com, which isn't up to date with Arc3.1 anyway.
Only documentation I've used too. ^_^ With Arc documentation as it is today, part of Arc programming is being prepared to read the source code to get the whole story. The Arcfn documentation is still a good place to get to know the essential utilities.
Anarki provides "help" functionality too, in case that, uh, helps.