A neat new feature which Facebook has just added to its homepage is hover cards. When you hover over a person's profile or a page, a hover card will appear showing a larger profile pic, cover photo and options for adding as a friend or liking the page. It'll also give you the ability to message that profile/page directly and which friends in common or friends which have liked the page.
It's a great way to now add and message people or pages on Facebook, instead of having to go on to their profile. For fan pages it shows how many likes the page has got because metrics do play a big role in the popularity of the page.