[Off-topic] PartTimeLegend:
PCs

Learn to program. - PHP, Java, C, C++, C#, Smalltalk, Fortran, LISP and ASP. Does SQL count?

Try an open-source operating system. - Linux Debian, obviously

Set my system so that it can dual-boot. - Windows 7 - Debian

Teach a child to use a PC. - Six year old nephew

Teach a relative to fix their own PC. - Mother via phone

Build a computer from spare parts. - Spend a day in the IT Department at a company and you have to.

Start my own Tumblr blog. - I have one. Rarely use it though.

Set up an array of at least three monitors. - Standard setup.

Build a media center PC. - Switched it to a media station box.

Build a media center PC--for my car. - No car anymore, though did have CD/MP3/DVD with USB and SD support.

Mobile

Root the phone. - Obviously.

Try every mobile OS at least once. - Symbian/BlackBerry OS/Android/iOS/Others I forget

Build own mobile app. - Basic ones.

Have smartphone battery last all day. - Once.

Control my house using my phone. - I have remote access for a lot of things via the internet and a need for a 48 port switch.

Complete a call on an iPhone without its cutting off. - Yes

Beat every level on Angry Birds and get three stars. - Then I flashed a rom and lost it.

Find something to play on my phone that isn't an Angry Birds, Fruit Ninja, or Cut The Rope clone. - Some space flight game.

Develop a best-selling iPhone game. - I wish, I'd be rich.

Master the art of typing on a touchscreen (without using autocorrect). - Swype.

Destroy an iPhone - conantroutman Suggestion - Why? I'd rather sell it or give it to a friend/family.

Gaming

Beat Day[9] at Starcraft II. - Haven't played in years.

Participate in a World of Warcraft raid. - Never played.

Win a game of Solitaire. - Yes.

Build a virtual-reality machine for first-person shooter games--and play a collection of the best FPS games ever created in it. (Contributed on Facebook by Peter Drake) - Sounds awesome, shall start tomorrow.

Beat a Metal Slug game on one quarter. - Don't know what this means.

Beat Minesweeper in under a minute. - Yes.

Participate in (or host) a LAN party. - Yes, school we used to do this and play Unreal at an old job.

Beat Doom II. - Never played.

Create my own Starcraft and/or first-person shooter level. - Nope.

Participate in a Dungeons and Dragons campaign. - Watched the cartoon when I was younger.

Hacking

Join a hackerspace. - A what? The Scene?

Learn how to solder. - At school. Used to throw solder balls at each other.

Program in BASIC. 10 GO TO 20

Learn to use Arduino. - Not sure what this is.

Make a wearable PC--or maybe a hackable wristwatch. - I've had wrist watch computer things before, used to read flashes from a PC screen.

3D-print something. - No need, I don't even own a printer.

Build a robot. - In school we half built for robot wars.

Build a robot out of Lego bricks. - Basic one, with the kit. Was awesome.

Install Android on every gadget imaginable. - PC and Phone. Might look at others soon.

Create a Kinect hack. - I've got Kinect, still not played it.

Tech Tourism

Become a space tourist. - I've been to a space thing at Seacomb.

Stage a gruesome scene for the Google Street View truck. - I've never seen it, however my back shows for the picture of where I live.

Track down a geocache and then leave my mark. - No, I've seen people on twitter and never really looked into it.

Visit the Computer History Museum in Silicon Valley. - Never left Europe, though surely Betchley House is more important?

Make a pilgrimage to Athens and see the Antikythera Mechanism. - I've been to Athens, don't think I did this.

Take a geek cruise to kill kobolds in the Caribbean, or to talk Macs over Merlot as I cruise up the Pacific coast. - Again never left Europe.

Break into Area 51. Bonus points: Break out of Area 51. - What's the point? Nothing's there.

Fly a jetpack. - I would love to.

Visit the Large Hadron Collider. (Contributed on Facebook by Tracey Pritchett) - I know someone who went to CERN, I wasn't invited.

Experience zero-gravity flight aboard a Boeing 727 vomit comet. - This is my dream.