You've tried to mount your linux NFS share via the Go menu's Connect to Server dialogue but you keep getting an error message stating:

You know your URI is formatted correctly (nfs://server/share) and you can mount the share on other Linux hosts so what gives?

It turns out that in order to get OS X to play ball we have to add insecure to the export options of the shares you would like to mount. For example:

/home/karma/torrents 192.168.1.0/24(ro,no_root_squash,no_subtree_check,insecure)