This week's shocking Season 4 finale was summed up nicely near the end of the episode by Walt himself: "I won." You can learn more about what happened by checking out the online extras for "Face Off":

• An "Inside Breaking Bad" video that takes you behind the scenes of the Season 4 finale

• Ten production stills of the Season 4 finale

• A video of the Season 4 finale's most talked-about scene UPDATE: This video is no longer available.

• An online trivia quiz on what happened in this episode

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

• Listen to the Breaking Bad Insider Podcast for this episode with creator Vince Gilligan, writer Tom Schnauz, co-executive producer Melissa Bernstein, associate producer Andrew Ortner, visual effects supervisor Bill Powloski, and editor Skip Macdonald.

Also worth your attention:

• Enter the Breaking Bad Sweepstakes for your chance to win a walk-on role in Season 5

• Creator Vince Gilligan answers questions submitted by Breaking Bad fans

• Hank's blog

• Marie's blog

• Gale Boetticher's Interactive Case File

• "The Cost of Doing Business" Graphic Novel Game (Also available for iPad and Android tablets)

• Better Call Saul website

• Breaking Bad on Facebook

• Breaking Bad on Twitter