In Breaking Bad's fourth episode of Season 5, Walt celebrates his fifty-first birthday with a new car while Skyler schemes to get the kids out of the house. You can learn more about what happened by checking out the online extras for Episode 4, "Fifty-One":

• An "Inside Breaking Bad" video that takes you behind the scenes of Episode 4.

• A bonus Inside Breaking Bad video, in which the cast and crew take you for an inside look at Sklyer's near drowning in Episode 4.

• Ten production stills of Episode 4, plus two sneak peek photos from next week's episode.

• Breaking Bad Story Sync for Episode 4, a two-screen experience with polls, trivia and video

• The Breaking Bad Episode 4 Ultimate Fan Game

• An interactive DEA Evidence Board that let's you track Hank's investigation of Gus's drug empire.

• Listen to the Breaking Bad Insider Podcast for Episode 4

• An open thread for this episode in the Breaking Bad Talk forum

• A sneak peek video for Episode 5, "Dead Freight"

Also worth your attention:

• Go Fring Yourself App

• Hank's Blog

• Season 5 desktop wallpapers, IM icons and Facebook Timeline photos

• Better Call Saul website

• Sign up for Breaking News: the Breaking Bad Newsletter

• Breaking Bad on Facebook

• Breaking Bad on Twitter