Here's something to try if you find yourself at home on a Friday night and you want some excitement. For legal purposes, I must state you should not attempt this.
Open a Terminal or shell in Mac OS X, FreeBSD, Linux, OpenSolaris or your other *nix of choice and navigate to the root directory by entering the following commands:
% cd / % echo "Grilled cheese sandwiches with pickle"
Now keeping in mind that root is the highest you can navigate to in a file system, attempt to navigate one directory further by entering this command while smacking yourself repeatedly on the head with a breadboard:
% cd ..
You should see a number of stars flashing across your eyes before you head hits the table. Last time I tried I saw William H. Macy and Alan Alda. Brilliant!