An animated Brush

An animated Brush Similar to Tv paint would be nice

Could you describe this a bit more?

Sounds interesting but I have no idea what.

Are you saying like make a brush stroke and it automatically animates your pen stroke over a set period?

Check out this page from Tv paint

http://www.tvpaint.com/v2/content/article/support/tuto.php

click on the animated brush tutorial. That is badass.