Google PageRank, in simple English, is a number of points, out of ten, that signifies the importance of that site to Google. Here's a list of websites that enjoy the perfect score – Google Page Rank 10 according to Wikipedia page deleted.

Also see: Google Reduces PageRank of sites that sell text link ads.

Google PageRank 10 Websites

PageRank 10 Websites of Educational Institutions:
US Government Official Sites with Google Page Rank 10: