Re: @Charles 9 - rm -rf /*
Nah. I admin my own computers. The only person who can take me down is me[0]. And if I do, so be it ... at least I'll have learned something. Having proper backups and automatic fallover hardware redundancy in key systems helps with piece of mind.
[0] To be perfectly honest, the Wife has access to the safety deposit box with the BigBookO'Passwords[tm], just in case I step in front of a bus. She's *nix literate (finally!) and knows how to access everything, but she's never seen reason to use root, even on her own computers (Slackware and BSD), so she doesn't.