Facebook profile information display
You can use the Facebook OAuth (FBOAuth) module for this. Here is a quote about it (from the module's project page):

... provides authentication services and an API to perform actions against Facebook. This module allows users to login to Drupal through the service commonly known as &quot;Facebook Connect&quot;. This module is built with simplicity and flexibility in mind, it provides login services (and does it well), and an API for performing any other actions you may want to write yourself to query against Facebook's APIs.
Features:

One-click login through Facebook.
Automatic import of user e-mail and profile information during initial login.
Integration with Profile module to map Facebook data to Profile fields. (Drupal 6)
Integration with Field module to map Facebook data to fields on users. (Drupal 7)
A flexible and direct API for modules to get authenticated and query Facebook's APIs (plus extensive documentation).
Extensive permission settings for Facebook data retrieval.
The ability to de-authenticate or unlink a Facebook account from a Drupal account.
Does not require any external libraries or downloads.