Depends what you want from it. I don't really do games, so for me it's all about making it as productive as possible - obviously at the time, MMS was first on the list, and then being able to theme it and change it's appearance - icons, dock, backgrounds, interface, etc etc. Then background apps and tweaks like being able to save files from Safari to the phone, copy and paste, being able to save YouTube video's, apps for viewing Office files, etc etc. It's all little tweaks really.....