A little demonstration (few scripts with the source code) showing how to load and unload custom ifp files which gives you the ability to use almost unlimited amount of custom animations in your missions/scripts.
UPD: Doesn't work with MVL and SilentPatch!!! (thx for the info to Jennawrightand Bryxanov1337)
These scripts are made for the latest version of the CLEO library (http://cleo.li).