In honor of Lifehacker's Top 10 Secret Features in Mac OS X Lion, I think it's only fair to go back and compile a list of the secret features in Tiger. But don't tell anyone, 'cause it's a secret.
Anyway, here goes:
1. It won't eat your young when it takes over the pride.
2. You can run your old MacOS 9 applications in Classic mode.
3. An archaic Folders --> Files filing system that proves surprisingly useful. Go ahead, try it.
4. It doesn't require a minimum of 2GB of RAM to run. Shhhh. Don't tell anyone. Hardware manufacturers will throw a fit if you found out it's all about the software.
5. No longer supports Flash. Tell me that's obselescence and I'll go home and sew my mouth shut right now.
6. Free of touchscreen "features" for computers that are NOT TOUCH SCREEN.
7. Mail.app is feature frozen. Because it's just email, people. Stop with the mission creep!
8. Runs the latest and greatest in web browsers, TenFourFox.
9. Runs the latest and greatest in office suites, LibreOffice.
10. Not tethered to a ridiculous upgrade cycle where every couple of years you upgrade your system to play with the new toys only to find out after a couple of days they're completely useless.
11. The updated EULA requires the user feel a definite sense of superiority.