I love free SEO tools... I`ve been using this one for a while now, and it`s very helpful. Funny story, I walked by someone in the office and overheard them mention it was such a pain, checking large amounts of PR (Google`s Page Rank) manually... needless to say they were thrilled when I sent them this tool:
Bulk PR Checker
The only thing I don`t like about it is they results aren`t exportable and don`t copy and paste very well. So, if anyone has a similar tool that also has an exprt feature, please do share!