On the Friday morning of every highly anticipated Hollywood release, you can reliably find MTV News' cheat sheet: a handy guide to all our original reporting on a film, plus exclusive clips, photos and interviews.

But we've never had to deal with anything like "Avatar." Headed into its fifth weekend of release, James Cameron's alien opus shows no signs of relinquishing the top box-office spot and should add tens of millions of dollars to its $446 million domestic total.

Which is why we've reloaded [article id="1628512"]our "Avatar" cheat sheet[/article] to encompass all the inside info we've assembled since opening day in December. Before heading to the theaters for the first or fifth time, check out the second installment of our "Avatar" cheat sheet:

Breaking Box-Office Records

Everyone expected "Avatar" to perform well at the box office, but perhaps no one other than James "King of the World" Cameron foresaw the film rising to the [article id="1629225"]#2 all-time worldwide box-office spot[/article], but that's exactly what has happened. While its remarkable staying power -- $50 million in weekend number four -- doesn't mean [article id="1628991"]"Avatar" will knock "Titanic" from the top spot[/article], we know one thing for certain: Cameron is the only filmmaker ever to have two billion-dollar-grossing films.

What Might Have Been

Did you know [article id="1629234"]Matt Damon and Jake Gyllenhaal[/article] were almost cast as Jake Sully instead of Sam Worthington? That Stephen Lang (Colonel Quaritch) filmed a series of [article id="1629313"]in-character Pandora recruitment videos[/article] that have not been released? That "Avatar" is [article id="1629012"]"Dances with Wolves" in deep space[/article]? We brought you news about all this and more.

What Will Be

If it wasn't a lock before, it is now: An "Avatar" sequel is coming. Last week, Cameron confirmed the obvious. Earlier, [article id="1628605"]the filmmaker had given hints[/article] to MTV News about the direction the next movie will take, making clear the story will pick up after the events of the original, when Princess Neytiri (Zoe Saldana) and Sully fall in love. The sequel might also explore Pandora's neighboring moons. "We have some story ideas for how to branch out into other moons of Polyphemus and the Alpha Centauri A solar system," Cameron has said.

Unresolved Questions

For some die-hard "Avatar" fans, waiting until the sequel arrives a few years from now is simply not an option. Some are already suffering from the "Avatar Blues." We can at least see where they're coming from: Cameron left a lot of questions unanswered. Why were avatars developed in the first place? How long have humans been on Pandora? These are just some of the [article id="1629423"]unresolved questions we've been answering on the site[/article] -- because it's going to be a while before we get a peek at what Cameron has planned next for his sci-fi franchise. "I have a trilogy-scaled arc of story right now, but I haven't really put any serious work into writing a script," he told us in December.

Check out everything we've got on "Avatar."

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