Cool Computer Tricks like ² or ÷ any others?

I recently had someone show me 2 cool computer tricks and was wondering if there were anymore out there.. the two I found out about were: adding the square root symbol while typing ² like so.. which is holding alt key while typing 0178, and the division sign which is holding alt key while typing 0247 ÷

http://www.coloryourprofyle.com/phade/alt.html

There are plenty of ALT codes there =) Have fun!

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