Heh… I think my heart is just starting to stop palpitating. I was getting up from my desk to throw something away and my foot must have been wrapped around my headphone chord.
My work MacBook Pro went flying and shut in the process. Because Apple makes resilient products which are amazing, the computer is fine. Thank God!
When can I get my MagSafe headphone connector?!?!?
Anyone else almost had a fatal laptop emergency?
Oatmeal Stout - Justin Thorp's blog 
Seconded! I’ve never yanked a laptop off the table, but I tend to get the cord wrapped around my chair at work. Then I pull away from my desk and send my Sony monitor headphones flying. They’re pretty beat up thanks to it.
Think there is one
http://www.tuaw.com/2007/10/07/replug-magsafe-for-your-headphones/