Jewelry Knots: Sealing the Ends

Someone posted a question Beadsnob about knots. What kind of knot do you make to tie the two ends of a bracelet or necklace?

A funny ad illustrating various knots

What's the most effective knot? A knot that doesn't come loose after wearing the jewelry piece for quite awhile. Forget the Gordian knot, okay :P

I just usually do a double knot and just touch it up with a drop of quick-dry glue then I snug it tightly into one of the bead holes just to hide it.

What do you use? Feel free to send me suggestions :)