Can't remember that actor's name? Can't think of the name of "that one show?" IMDb.com is the place to go!
Not only for TV shows, but movies, and any other sort of media, you can discover anything you want to know about a show/movie, from the day that an episode was released, to fun facts about that program.
Let's say that you look up Family Guy on IMDb. You can get an entire cast list, the overall rating of the show, a summary of each episode, the names of each episode, fun facts, and everything else you want to know about Family Guy. Let's say you want to know more about Seth McFarlane, the voice of Peter Griffin - you can click on his name, and find out everything you need to know about him! On McFarlane's page, you can find his biography, his filmography (everything he's been in) and fun facts!
One click will lead you to discovering everything you ever wanted to know (and more) about your favorite TV shows and movies!
http://www.imdb.com/
There's also an APP for IMDb as well for any Apple products and SmartPhones!