When looking for a list of movies a certain celebrity has been in, you can start by checking their personal website. You can, also, find a list of Christian Bale movies on the Internet Movie DataBase website.
Liam Neeson is a popular actor who has starred in the popular film series Harry Potter and other movies. Yahoo movies and IMDb both have a complete list of movies, with character names, in which he has appeared.
One may look to a movie store such as blockbuster to find a list of Will Smith movies. Another place one might look to find a list of Will Smith movies would be at Amazon or ones local library look up.