CodePlugin is a plugin for the popular Mac OSX chat client Adium. It's goal is to simplify pasting code blocks between developers. To use it, just prefix your message with '%CODE ' and the rest of the message will be popped up in a new window. This window is editable, making easy to fix things and copy the result back to the other person.

• Add syntax highlighting. This will probably only happen if I can find a good Objective-C library for code highlighting.