Content Query Web Part : Master of all OOB webpart

If you are looking for formatting sharepoint content as far as your imagination goes , you have to explore master of all OOB webpart "Content Query Web Part"

Customization Sample :
http://msdn.microsoft.com/en-us/library/bb447557.aspx

This is one of the most powerful webpart but still SharePointers avoid it's usage due to its complex looking .xsl language . Fact is that once you understand XSL then this webpart will become common in your websites.