Increase your intellectual dominance:

Can you use every tool on the learn list? If not; how will you ever design the perfect website to hypnotize a horde of internet users and build up an army to attack Microsoft with? Also remember W3schools for more web for world domination.

How many programming languages have you mastered this week? Use this amazing site to master the few programming languages you don't know yet.

Really good books! Instead of buying one or two books at a time buy a whole library for the same price.

How about a free university lecture on a geeky subject like: Collective intelligence or electronics on plastic. You can find many subjects with hundreds of lectures in video audio or text. Lectures are from universities like MIT, Oxford and many more.
You already think like a geek, now look like one:

Every geek knows ThinkGeek but here are a few categories' you need for your new improved super nerd/geek image:

Visit them for a few really good nerd shirts.
Make money the nerd way:
Make money to buy all your geek gadgets.

Plant a few smart ideas in your over-sized brain for making money. Then use them to finance your plan of world domination.

Use your superior geek knowledge to create content and then get paid properly. Any content accepted; video, articles, pictures and more.

Now you know to design the perfect site, but how do you use it to make money? eMonetized is your answer.
Now that you have the money; buy the gear:

Let's face it; all the best gadgets and gear comes from Japan. Jbox is a store specializing in Japanese toys, figurines, Japanese pop culture items and more. Hello kitty vibrating shoulder massageranyone?

This is my favorite gadget site! They are cheaper than dirt, offer better service than Santa and offer worldwide free shipping on all products. If the previous category didn't work for you this is the site to use. Sometimes you get the same gadgets ThinkGeek offers but at a fraction of the price.

Once again, what geek or nerd can live without a ThinkGeek gadget or two?
A few I like:
- Prove you're a real nerd by solving an Irregular IQ Cube
- Fight your geek friends the geek way with these
- Something to keep you company 2:30 in the morning when you're programming the next great piece of p2p software: Glow Brick
Other sites geeks and nerds can't go without:
Slashdot For all your daily nerd news.
Boing Boing Your original “directory of wonderful things”, a group blog.
Linux Questions Because nerds don't like the evil of Microsoft.
Online Alarm Clock Never oversleep, you've got things to program and people to im.
Conclusion
There are millions of sites geeks and nerds could potentially like or use but I don't know half of them. If you do on the other hand; feel free to comment and add them to this admittedly limited list.
Remember to take a break between your 12 hour programming or web surfing marathons.