MyIPAddress
If you play games over the Internet then you know what a hassle it can be when you are going to host a game and need to give your IP address to your fellow players.  My IP Address looks up your current IP address and then copies it to your clipboard.  To use it all you have to do is place the utility into your 
"Apple Menu Items" folder.  Then when someone asks you for your IP 
address all you have to do is select MyIPAddress from the Apple Menu.  
MyIPAddress will instantly look up the address and copy it to the 
clipboard, allowing you to send it to all your fellow players!
Requires a network or Internet connection.