Forum Moderators: phranque
If the PR is acquired from your own site, just take them down and Google will redistribute among the remaining site pages.
If the PR is from external sources, get hold of those webmasters and have them change the links over to other pages on your site. If you don't think they'll do that (nothing else on site relevant to them), then I *think* just taking the pages down and putting in a permanent redirect will let Google transfer that PR to your redirect target.