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A while back someone said that they setup a shop dust collector and used it pull out all of the old loose fill insulation in their attic.
Today on Hometime Syndicated* they are finishing off an attic space for a new MB. The floor had been previously insulated with cels. They had to restructure some of the floor and make room for plumbing. The home owner use a leaf blower to suck it up and put in a trash can lined with trash bag.
* Hometime Syndicate is a relatively new series that was made just for commerical TV. The projects this year are the kind that an "experience DIY" might tackle. In all of them the HO has done some of the work and it this one it appears that they are doing a majority of the work.