1.Pyzam ( http://www.pyzam.com/bloggertemplates ) is one of the most beautifully arranged site offering Blogspot templates. Browsing is made easy and there are lot of categories to choose from.
2.Instant Shift has made a list of 120 best free Blogger templates around. You will surely find yourself favourite. Check it out: http://www.instantshift.com/2009/03/09/120-best-free-blogger-templates-around/
3.Blogger Buster has made a similar list but of 20 best Blogger templates from last year. Check it out to find yourself a new template: http://www.bloggerbuster.com/2009/01/top-20-free-blogger-templates-of-2008.html
4.B Templates at http://btemplates.com/ offers you wide variety of Blogspot templates and you can choose from dozens of free and beautiful ones.
5.Free Blogger Templates ( http://freetemplates.blogspot.com/ ) has new (XML) and classic (HTML) Blogger template layouts for your Blogspot powered blog.
6.Another site at http://blogger-templates.blogspot.com/ has also lots of beautiful Blogspot backgrounds.
7.Final Sense ( http://www.finalsense.com/services/blog_templates/ ) offers high quality templates and they have hundreds of those for you to browse and download.
8.You can find some very nice and neat Blogspot templates on this site: http://blogspottemplates.blogspot.com/.
9.Blogger Templates at http://www.bloggertemplatesfree.com/ has extensive gallery of themes and skins for your Blogspot powered blog.
10.eBlog Templates at http://www.eblogtemplates.com/ has only high quality premium templates and you can choose from over 300 templates.