Love the Boba Fett, and the Reddit alien's not bad either!
If you have changed the default Facebook profile picture and uploaded your own, it’s fine. But if not, then why not replace that boring picture of the guy with a wisp of hair sticking out of his head with something different and funny?
One nice person called David has created a bunch of alternative Facebook profile silhouettes - from Albert Einstein to Frankenstein, Batman to Darth Vader. These are free to use in your Facebook profile. Have fun!