This is awesome – although I rarely (actually never) use booleans when modeling, I do often use them when animating which ultimately makes more sense for the boolean feature in all 3D applications, unless of course you are working with a solid modeler, in which case… super useful!
In any case, this is what you need for boolean animation! – fRay Boolean Master is a free script for Autodesk Maya which enables you to create a boolean with one master object and as many receiver objects as you like. It will also provide you with a controler for the master object which is fantastic. Also, if you select “keep animatable” and both master and receiver objects can still be animated after the boolean is applied. If that wasn’t enough you can still apply the boolean to a previous boolean and still edit the parts. So stop sittin’ around and get it!