I know that these have been made before, Sethbling's triple jump for instance. But mine is made with just tnt, redstone, cobble, and water. No command blocks or anything "fancy."

How to do it:
1 - Stand on the pressure plate by the TNT triangle
2 - When blown up into the air, push forward
3 - Try to land on the next TNT area.

This may blast you back, it blasted me back. It's still a double jump though!

You can extend the time it takes to explode by adding for redstone repeaters
You can also extend the amount of jumps by doing the same redstone circuitry as I did, but adding for delay!