JMod Facebook Slider Likebox
JMod Facebook Slider Likebox is an excellent Facebook module. You can display you fans and streams of your Facebook page on the sidebar.
This can used as a regular likebox too.
It has many options. You can move it around every corner of your site and has a couple of Facebook buttons to choose.
It is stylish with rounded corners by default.
Fully working with Joomla 2.5 and 3.0
"The module includes a Backlink to our site."