This is single post template. There is no sidebar in this template. But comment form template is clean and beautiful.
This is TwentyEleven page template with sidebar. Everytime you want to use sidebar on your page you need to set this template. Default template has no sidebar.
This is TwentyEleven regular page template (default). It has no sidebar. Clear and beautiful template.
This is a screen shot of TwentyEleven page template for posts show case. This template is great. You can list all posts in a page with different styles for each post format. This template is good to set as a frontpage. Only bad thing is featured slide show not automatically slide the posts. I think this is a beta bug cos’ I’m testing it on beta-2 release.