nice one... i have found something after i read thread post here... http://check-backlink.com/cgi-bin/bl_checker.pl should be a good one. http://nichpakaich.com/experience/check-your-backlinks is a review. But IMHO, yahoo site explorer can do it more better than anything. Start from we want a link that would be crawled by SE right ?
Include to the list WEB CEO ,it is very good tool, and FREE, you can do many things with it, check serps positions, check link popularity ,website analyzing etc. Using it since one year and I am impressed how it works.
SPR has mulfunction especially in terms of pagerank detection and hard to get a result anymore. Quite a shame as I used to use it when I was a newbie.