We have done some search to collect beautiful clean, blogger templates when i was searching. I got some of the cool websites which has best blogger template. It was premium templates and now its free of cost. You can download directly without paying single penny.
So here we go :
1. Web Design Tune : Which has got cool templates. This templates are premium templates for blogger. They have joomla templates, WordPress templates as well. You can download this and use it to your websites.
2. Pro Blogger Tricks : Which is all time favorite websites has best templates. This templates are more famous and most of them will use.
3. Blogs Hear : This website also got some good templates. If your thinking about doing something which is like photo shoot weblogs then it's really useful.
4. B templates: This site is most visited for blogger templates. You can also select according to the color or layout and more.
If you don't like any of this. Then you need the tutorial which explains how to make your own template design and make it best looking site.
I have one more idea which gives a best template using slight modification from blogger default templates only. That is not so difficult but we need to change the color of the template and its background color. Secondly we have to change the fonts of those templates. It will really looks nice.