It’s fun, and useful for lists. Not to mention I was surprised it wasn’t enabled yet.
Assuming you don’t want to open up a can of HTML worms, just a simple “{text}” type deal.
[strike] Oh no, unwanted text [/strike]
Instead of s, use strike
[strike] your text here [/strike]
Here’s everything that is supported: http://www.chiefdelphi.com/forums/misc.php?do=bbcode
Thanks for making me look like a fool, Michelle! 
Just kidding. But thanks a lot, though. I didn’t know it was [strike]. And thanks for the list, Joe.