Cool thing I remembered: Flash, since MX can output to a series of PNGs

[kageurufu]

You gotta make sure the flash has no scripts, all animation is visible on the timeline (if you scroll through it, not generating a movie) but it will
therefore
bootanimations
I made a 16fps (about the same as the Droid 2s boot animation speed) 480x480 flash, and now have a new bootanimation
check it upload.kageurufu .net/f/0ed6aa5fad0ab414bbcc332b2a598855/boot.swf