Just a quick video showing off new Bowser Tech: Aerial Fortress Interrupt, or AFI for short. It's usable when going up platforms and from the ledge, and it's great for cancelling end lag. It's all in the positioning and timing of the move.

There are two major indicators that you've done AFI correctly:
1. The screen doesn't shake.
2. The little poofies underneath Bowser don't show up.
3. Apparently the crowd freaks out if you do it near the ground.

Better explanations can be found here:

http://smashboards.com/threads/melee-...