XDA member bbonz has created two ‘fake’ apps. One lets you make a fake badge on your phone so you can have a special agent, FBI, etc badge on you (and no, I don’t think anyone will mistake your phone for a real badge:)). This has just been updated to allow for some user customization as well. He has also created a neat little app that makes it look like you earned a star on the Hollywood Walk of Fame which he calls Walk of Fake (I like the name).
Both are strictly for amusement so if it’s the sort of thing you’re into go for it. And remember, if you appreciate his work buy him a beer…or at least a fake beer:)