Contest140 Update
Since announcing my thought for a Twitter-based contest - where you submit a program in 140 characters or less - some people have begun to reply with some interesting Tweets. To see them, search for #Contest140 on Twitter. Although the contest (which is just for fun really) hasn't begun yet, I thought I'd use one entry as an example of what I'm looking for.
Twitter user @neuront was the first to submit the following Python program:
for i in range(0, 32):
for j in range(0, 32):
print('*'if(i^j)==(i+j)else' '),
print ''
He indicated the line-feeds and tabs in his Tweet as well. When run in the Python interpreter, you get the following:

