Hi guys these are some ways to check the backlinks of your site.
1. Using google toolbar Search in Google prefixing "link:" to your url with http:
2. See your Backlinks at Yahoo https://siteexplorer.search.yahoo.com/
3. Check your backlinks Free Backlink Checker, Free Link Check Tool
4. Check all the back links with PR of those sites who is having your link Backlink Checker
5. See detailed list of your backlinks Backlinks Checker Tool - Backlink Watch
Please add the ways you use to check your back links too