For those of you still using Classic Blogger templates, I've just come across a great site featuring loads of beautiful template designs for you: Isnaini.com.
At Isnaini.com you'll find literally dozens of beautiful and original blog templates to download. Each template downloads as a zip file, which contains the template code.
Even "New" Bloggers can take advantage of these designs: to use Classic templates in your blog, you can revert to Classic templates using the link right at the bottom of your "Edit HTML" page in your Blogger dashboard. Then you can simply copy and paste your new classic template code in the editing box.
If you're looking for "new" Blogger templates, be sure to check out my Blogger Templates Downloads page where you'll find a wide variety of original templates, updated regularly to showcase new content.