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vitaplease - 8:51 am on Apr 1, 2004 (gmt 0)
Deeper Inside PageRank [webmasterworld.com] chapter 8 discusses Updating the Pagerank vector. also this recent paper: Combating Web Spam with TrustRank [webmasterworld.com] discusses the selection of "reputable seed pages". If you skip the formulas there are some interesting things around. DMOZ or no DMOZ, Google already has plenty archived seed selection start options for crawling IMO.
You might want to have a look at this overview article on Pagerank (pdf)