Lots of articles out there toting about it. Performance seems fairly solid for simple operations. Will try something complex this weekend, use Eclipse to open a project up or something with it connected over VPN.
On CentOS or Fedora
(assuming sshd is already installed..)
sudo yum install sshfs
Use it by (in your home dir)
mkdir remote
sshfs computername: remote
e.g.
sshfs picard: remote
To disconnect
fusermount -u remote