I'm not sure if you guys have seen it but Anderson Silva made an appearance on the TV show Cribs but the Portuguese version.
Anyways, Silva said he weighed 220 in that episode but he looked really big and bloated. I've never seen him like that before. I also think he had a bit of time off too. I'm was always under the impression fighters gain a few pounds when they are not training so first they lose weight - maybe 10 pounds or so, then they begin to cut. In Silva's case I see him realistically exercising and losing weight until he hits around 200-205 and then he cuts from there.