Answer: There are two reasons.
As you know, the flash player is by far`the best
media platform for the web.
So, first you may learn how to program the flash display, using
actionscript and the flex SDK.
Secondly, it allows you to be creative and develop your own
mini-game on top of interactive video, or even to develop
a unique personal interactive experience by customizing
the XIMPEL player with your own programs, as indicated