The third trailer for Baz Luhrmann‘s adaptation of The Great Gatsby has been released, showing off the movie’s crowded soundtrack. The film will feature songs by Beyonce, Jay-Z, Kanye West and Lana Del Ray–Spotify has a free playlist of the songs.

Much has been written about the music in the new trailer, but nobody has mentioned how a famous green light shines throughout the trailer.

We won’t spoil the plot for you, but a green light at the end of a dock plays a major symbolic role in F. Scott Fitzgerald’s classic novel. If you want to find out more about the green light, follow this simple Google search.

In a spooktacular, ghoulicious episode of “5 Things You Need to Know This Week,” we count down our five favorite Halloween costumes. With special appearances by Beyoncé, Blake Lively, Brian Williams, and Brian Williams.

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In this week’s episode of “5 Things You Need to Know This Week,” we give a lesson on human reproduction, talk about the U.S. Open, sit down with Julian Assange, and, oh yeah, cover that Irene thing everyone’s been talking about.

For more videos, check out Mediabistro.tv, and be sure to follow us on Twitter: @mediabistroTV

The 2009 edition of the The Associated Press Stylebook–the writing Bible for journalists of all stripes–now includes an entry about the microblogging website, Twitter.

In addition to this new terminology, the book also includes brand-new information on writing about Beyonce, Timothy Geithner, texting, and baba ghanoush. Among the unhappier additions to the book are a full lexicon of recession-era entries about credit default swaps and derivatives.

Here’s more from the release: “The new edition of the Stylebook adds a ‘Quick Reference Guide’ to make it easier for users to answer the most common questions on topics such as abbreviations and acronyms; homicide, murder and manslaughter; and polls and surveys. An official Twitter account for the AP Stylebook has 6,000 followers.”