@donttrythis says he's nailed down 72 of the items on this list, I think I'll scratch off the ones I can do just to see if I'm anywhere close to being as awesome as him.
Crack the WEP key on a wireless router.
Screw with Wifi leeches.
Wire your own home with Ethernet cable.
Turn a web camera into security camera.
Use your 3G phone as a Wi-Fi access point.
Properly connect a TV, Tivo, XBox, Wii, and Apple TV so they all work together with the one remote.
Benchmark Your Computer
Troubleshoot any computer/gadget problem, over the phone.
Use any piece of technology intuitively, without instruction or prior knowledge.
How to irrecoverably protect data.
Recover data from a dead hard drive.
Share a printer between a Mac and a PC on a network.
Boot a computer off a network drive.
Bypass a computer password on all major operating systems
Bypass content filters on public computers.
Buy a domain, configure bind, apache, MySQL, php, and Wordpress without Googling a how-to.
Basic *nix command shell knowledge with the ability to edit and save a file with vi.
Create a web site using vi.
Transcode a DVD to play on a portable device.
Hide a File Behind a JPEG.
Build amazing structures with LEGO and invent a compelling back story for the creation.
Build a two story house out of LEGO, in monochrome, with a balcony.
Determine the combination of a Master combination padlock in under 10 minutes.
Assemble IKEA furniture without looking at the instructions. Bonus point if you don’t have to backtrack.
Be able to construct paper craft versions of space ships.
Fix anything with duct tape, chewing gum and wire.
Understand wherre XYZZY came from, and have used it.
Burn the rope.
Learning to play the theme songs to the kids favorite TV shows.
Solve a Rubik’s Cube.
Explain special relativity in terms an eight-year-old can grasp.
Recite pi to 10 places or more.
Be able to calculate tip and split the check, all in your head.
Understand the electromagnetic spectrum - xray, uv, visible, infrared, microwave, radio.
Know the difference between radiation and radioactive contamination.
Solder a circuit while bottle feeding an infant. (lead free solder please.)
Build a fighting robot.
Program a fighting robot.
Build a failsafe into a fighting robot so it doesn’t kill you.
Be able to recite at least one Geek Movie word for word.
Know what the 8th Chevron does on a Stargate and how much power is required to get a lock.
The ability to name actors, characters and plotlines from the majority of sci-fi movies produced since 1968.
Sleep with a Cricket bat next to your bed.
Have a documented plan on what to do during a zombie or robot uprising.
Be able to convince TSA that the electronic parts you are carrying are really not a threat to passengers.
Get something on the front page of Digg.