Gerry, I may be in the minority, but I probably wouldn't look at a *movie* of a still model unless it was less than 300K in size.
I'm in agreement with Holmes. This is another reason I try to champion formats like PNG.
They work well in the forum and can be reused later for compositing.
I'd suggest movie formats best serve walk cycles and animation that reveal important aspects of the characters personalities and the lives they lead (i.e. their stories).
Another great thing about A:M is that we can render out to sequential PNG images.
In this way individual images/frames can be repurposes and/or composited into still imagery.
Edit: Prior to the advent of PNG I tried to champion the use of TGA.
Targa is a great image format but it had one problem... incompatibility with viewing online via the internet and in html.
PNG overcomes this problem.