I just finished working on a Growl Display plugin that will send Growl notifications to an LCDproc server. It works very well! I will hopefully have a download available soon. This will allow you to view Growl notifications on any character LCD supported by LCDproc, or on any linux machine if you run the curses or text drivers. Because it uses LCDproc's TCP/IP connection protocol, you can send your notifications almost anywhere!
Check out the screenshot. Notice the LCDproc server running a text based curses display in the terminal.