Today's news you might've missed:

• Katy Perry was seen hitting the waves of Hawaii in a teeny bikini over Christmas, while Russell Brand is said to have stayed in England. Now sources are claiming that the two are having trouble and are spending time apart. [E!]
• Today was likely a tough one for the Biebs, as his grandparents are recovering from a serious car accident that totaled the couple's car. [USA Today]
• A belated Merry Christmas from the Lohan family! Except from Michael, 'cause he's not pictured. [TMZ]
• It's just about the last thing we'd ever expect to see Bon Iver do, but here they are appearing in a trailer for a forthcoming fitness DVD. [THR]
• Rachel Uchitel, according to her tweeted photo and its caption, is five months pregnant. [Rachel Uchitel's Twitter]
• If there's an award for winning the most awards, then Adele would surely nab that one too: The singer has sold five million copies of "21" in the States, the first to do so since Usher's "Confessions" in 2004. [NYDN]

One of the most controversial reboots being developed in Hollywood appears to have hit a snag.

The Los Angeles Times reports that the proposed new "Buffy the Vampire Slayer" movie is looking for a new writer.

According to the paper's Hero Complex blog, the script "fell far short of expectations and, in the end, was rejected completely." (That script's writer, Whit Anderson, has not posted anything recent about the project on Twitter.)

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As was mentioned in April, Justin Bieber is set to star opposite Mark Wahlberg in an as-yet-unnamed basketball drama.

But why did he cast the Biebs, who doesn’t have film acting experience? “Intuition,” Wahlberg tells MTV News.

Wahlberg, 40, made the amazing jump from fluffy hip-hop sensation to serious actor, and apparently he has faith that the 17-year-old entertainer can do the same.

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According to TMZ, "American Idol” judge Steven Tyler might be engaged to longtime girlfriend Erin Brady.

The 63-year-old rocker and his 38-year-old lady love were photographed in Maui on Christmas, with Erin flaunting a rather large diamond solitaire. The bauble could be nothing at all, but TMZ cites sources who claim the pair are indeed engaged.

Tyler’s manager, Eric Sherman, tells CNN that he has “no comment.”

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Great Scott! That's one expensive Delorean.

A car used in the 1990 sequel "Back to the Future Part III" has sold at an auction for $541,200, Hemmings.com reported. Although there are many replica Deloreans out there, this is the genuine article, according to movie and TV memorabilia auctioneers Profiles in History.

Viewers of Syfy's reality show "Hollywood Treasure" first got a glimpse of the Delorean sitting in collector Desi Dos Santos' garage.

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"Avatar" and "Fast Five" don't share similar accolades, but there's one award both films hold, and that's being among the most pirated movies.

"Avatar" took the top spot on TorrentFreak's 2010 list of most heavily shared films, and this year "Fast Five" laid claim to the title.

According to the site, the film, which grossed $626 million worldwide, was downloaded 9.26 million times via BitTorrent. ("Avatar," meanwhile, was shared 16 million times in 2010.)

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Tom Hanks' "Forrest Gump" will live on as a cultural treasure in the National Film Registry of the Library of Congress.

The 1994 film is among the 25 movies that have been selected for 2011, bringing the grand total of movies preserved there to 575. This year's list includes movies made between 1912 and 1994, and runs the gamut from documentaries and home movies to animation and avant-garde shorts, the National Film Registry says in a statement.

The Registry goes on to explain that the features selected made the cut because they've been deemed as "culturally, historically or aesthetically significant."

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Janet Jackson has landed on PETA's "naughty" list this holiday, and Kim Kardashian isn't far behind.

The animal rights organization has named Jackson "Grinch of the Year" for launching a collection with fur company Blackglama, according to GossipCop.

"When Janet Jackson had her infamous 'wardrobe malfunction' during the Super Bowl, at least the flesh that popped into view was her own - unlike the stolen animal skins that she drapes herself with, which are as dead as her taste in fashion (not to mention her career)," the organization says in a press release.

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A Pennsylvania man claims he's the reason the Interwebs thought Jon Bon Jovi had died last week.

As Entertainment Weekly reports, musician Jeffrey Goho says in an interview with New Jersey's Asbury Park Press that it was a tweet he sent from his friend's account that launched the widespread Web concern that Bon Jovi had passed on.

(The interview doesn't mention the blog item, which appears to have since been removed, that asserted details for the purported death of the 49-year-old rocker.)

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"Idol" alum Danny Gokey is ready to get hitched again, and he's looking to do it soon.

On the website for his Sophia's Heart foundation, the country singer announced on Christmas Day that he's engaged to girlfriend Leyicet Peralta, and the couple plans to get married in late January.

The 31-year-old season 8 "Idol" competitor lost his first wife, Sophia, three years ago from complications during a heart surgery, The Boot reports.

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