Ooookay. I get home from work today, poke at NFS, and it lets me mount my exports. I changed nothing from this morning, when it wasn't working at all.
/etc/hosts in the server only lists localhost and the server's IP and hostname. The client lists localhost, the client, and the server. I guess it's just one of those things, like when I had to reboot my gateway after installing ipmasq before it would masq and not return `sendto' errors. ARRRRRGH! Thanks for the help anyway, guys. *takes a baseball bat to the cluster*

