Ease functions make camera motions/animations seem more natural by easing in and out the motion. Most Max objects (line,bline, etc) create perfectly nice linear ramps, but they seriously look mechanical. This can be great for a particular look (Im thinking of Autechre videos here.. *sigh*), but sometimes you want a more traditional and natural look. So I asked on the Max list and got some great responses, but they were not quite what I wanted (used line, for one).
This will be in v001 framework, but its immediately useful and does not have any requirements. Check it out.