Exploding boxes continue to be popular. Here are some links to instructions, the occasional template, and some examples.

A video by CraftyAlice on making exploding boxes from scratch

ScrapDolly's instructions for a Valentine box, with another version here .

KaiserCraft PDF - it's been removed from their site but still available thru the Wayback Machine

Templates:

Template from About.com:Rubber Stamping

Template from SplitCoastStampers

Variations:

exploding Prism

My exploding box, using wedding votive candle holders

Very pretty, very different sort of exploding box instructions at magic-boxes.com with some lovely samples here and here

Not instructions but some interesting decorative "page" cut-out variations on the Crafty Red blog - hard to explain, just have a look!

An exploding box with birdcage!