A little Facebook API
If you head over to http://developers.facebook.com you can get code that you can paste into your site. The feeds are served in iframes.
On this page, using my "As is" input format, I pasted the code for Activity Feed and the code for the "like" button.
The selection of feeds seems kinda limited. Perhaps there are more options using the facebook mark-up language XFBML.
I'm not too sure what you will see on this page. It seems there's a possibility that it may show your facebook activity feed if you are currently logged into your facebook account. Don't let it freak you out.