Trick 4

Over at WinCustomize, someone thought they'd found an Easter Egg in the Windows Notepad application. If you:

1. Open Notepad

2. Type the text "this app can break" (without quotes)

3. Save the file

4. Re-open the file in Notepad

Notepad displays seemingly-random Chinese characters, or boxes if your default Notepad font doesn't support those characters.

It's not an Easter egg (even though it seems like a funny one), and as it turns out, Notepad writes the file correctly. It's only when Notepad reads the file back in that it seems to lose its mind.