I thought it would be much hard to mount an NFS share onto a Mac OS X client, but I did run into some issues I'll share here.
sudo mountnfs yournfsserveraddress:/your/nfs/export yourtargetdirectory
but got this error:
mount_nfs: /path/to/your/target_mount: Operation not permitted
To fix, use the -P flag, like so:
sudo mount_nfs -P your_nfs_server_address:/your/nfs/export your_target_directory