Have you ever looked at a Jackson Pollock painting and thought "even I could do that!"
Well, you were probably fooling yourself.
Don't believe me?
Hop on over to jacksonpollock.org where you can try your hand at creating a Pollock-like picture of your own.
Granted, this flash tool doesn't handle quite like real pigments. But it's close enough to give you a sense of just how hard painting by dripping can be. . .
JeongMee Yoon is a talented photographer who noticed that some children develop a powerful affection for specific colors—namely pink and blue—and decided to capture the phenomenon in some remarkable photos. Go here and take a look at the Pink Project and the Blue Project.
Rafaël Rozendaal is a Dutch-Brazilian artist who, amongst other things, has created a series of websites, each a work of art in itself, featuring a single, extremely simple piece of Flash animation. Click on the image (right) to visit my favorite, called "Much Better Than This." If you're interested in seeing more of his work, click here.
Bored with your online image?
Spice it up by creating a 3D image of yourself at meez.com. The site allows you to choose physical characteristics, clothing, settings and more.
Once you're done, you can save your "new" self, then post it to your blog (like I have), or use it as your personal ID for instant messaging.
Here's a really cool timekiller for anybody who likes photography and design. Montage-a-google (here) is website that "uses Google's image search to generate a large gridded montage of images based on keywords (search terms)."
Just type in any word you like and the site pulls in all kinds of images from the Internet and automatically creates a photo montage in a matrix whose parameters you can specify. If you don't like how it looks, search again or use the "Advanced Options" to change the complexity of the grid.
The image above was created when I searched on the word "prism" (click on it to see an enlarged version).
Fishloft is a (German?) site that introduces what appears to be instructions for building an elevated room for your fishpond. Based on creating a vacuum, it looks like it's not too hard to put together. So, if you have a school of fish swimming in your backyard, why not give them something they've all been hankering for—a room with a view.
mono is a creative ad agency that has come up with a delightful new take on the "Mr. Potatohead" concept.
If you access their monoface site, a countenance will appear. Your job is to click on the mouth, nose, head and each eye to insert different variations of these body parts. Then keep clicking until you arrive at the perfect guffaw-inducing combination.
The image above shows two faces I made using monoface (click for a closer look). According to the site, over 750,000 different faces are possible. And most of them are pretty funny.
To make your own, click here.
Here's another totally cool website that makes creating art a lot easier.
Flower Maker (here) specializes in helping you to create stunning floral patterns. 
First, you choose the type of petals you want, along with the color, the number and the opacity. Next, you simply click and drag inside the drawing area. Voilà! perfectly geometric petal patterns are rendered for you automatically. If you change your mind, just click "undo petal" or "start over" and give it another try.
If you like, you can upload your flower(s) to the site. Alternatively, you can visit the "community garden" to see the creations of others who have given Flower Maker a go.
Feeling bored and weary?
Put a little glide in your step by sliding on over to Line Rider (here)—one of the easiest and most enjoyable flash games ever.
It's really easy to play: use the pencil tool at the top of the screen to draw a series of hills and other angled lines for the the little guy on the sled. Hit "play" and watch the guy go zipping downhill on the lines you've drawn. "Ooh" and "aah" as he picks up speed, hits bumps, makes jumps and wipes out. Go back and try again. And again. Within minutes you'll have the guy flying down the slopes like an Olympic luger.
Once you've created your ultimate downhill adventure, hit the save button and record the wild ride for posterity.
Then, check out the movies other players have made.
You will be blown away by their dazzling inventiveness.