I have spent many hours searching for various hacks, tricks and custom widgets to make my blogs stand out. My blogs are nothing compared to some of the jaw-dropping blogs out there, but I think I've come a long way from the simple days of the default templates I started with.
The link below is to a Word document I put together of all of the hacks and changes you can see here and that I have used on my work blogs. It's not 100% complete, but I'll add to it as time goes on and update the copy.
Many, many thanks to Amanda at Blogger Buster (http://www.bloggerbuster.com/) for all of the help her blog gave me. If you have a blog I highly suggest checking out her posts. Most of these hacks came from her.
Download Link (http://blogger-files.s3.amazonaws.com/Blogger Documentation.docx)*
*It's located in one of my Amazon S3 buckets. Just click and save it.