Turns out you can duplicate the existing forms folder and rename it advanced_forms and your got a plug and play solution for that block:http://www.concrete5.org/marketplace/addons/advanced-forms/...

Also works for extended form:http://www.concrete5.org/marketplace/addons/extended-form/...

After trying JordanLev's brilliant "Designer Content" Im starting to think I could write these things. While the tutorial definitely proved that false, I am making headway. You'll see how to wrap a javascript up to function with any block and grab the core code right out of the core without touching it (thanks, Andrew).

Of course, the block is cool, too!