The world's most famous ZIP code recently returned to television on the CW with the third season of the new "90210." If you haven't been following the remake of the early-'90s teen soap opera, a lot has changed in 20 years, and not just the dropping of "Beverly Hills" from the show's title.

Long gone is the relative innocence of characters such as Brandon, Dylan and Donna. Instead, today's more discerning fans get scenes straight from a Bret Easton Ellis novel.

Look for the usual array of over-the-top stories this season from the current senior class at West Beverly Hills High School, including an earthquake (perhaps caused by the guest appearances of the Kardashian sisters) rocking their quaint little town. The graduation episode can't come soon enough.

In the meantime, here are some other TV-show remakes that are at the head of their class.

"Star Trek: The Next Generation" (1987-94): Jean-Luc Picard (Patrick Stewart) sat in the captain's chair for this series. It actually made Trekkies (or Trekkers, if you insist) forget about James T. Kirk, Scotty, Bones and that green-blooded, pointy-eared Vulcan.

"Hawaii Five-O" (2010): This new series is a smart, blood-pumping thrill ride. McGarrett and Danno are back and ready to rid the island of scum with no rules and no red tape. And even the old theme song returns!

"Battlestar Galactica" (2003-10): Humans are forced from their home planets by a race of mechanized (although humanlike) Cylons in search of a safe new home on the opposite end of the universe called -- you've got it, Earth. But the remake zested things up with more subtle and mind-scrambling biblical themes than an Easter-egg hunt with Pat Robertson.

"Doctor Who" (2005-present): Hard-core fans (and really no one else) are hopelessly devoted to the never-ending adventures of "the Doctor" and his time-traveling adventures in a blue 1950s British police box. It's a series that has been resurrected more times than David Hasselhoff's acting career.

"Knight Rider" (2008): Speaking of the Hoff, his character's son (played by Justin Bruening) took over the family business in this short-lived and sexier sequel to the '80s TV series. Sadly, it never really caught on with fans. Maybe the world really isn't ready for a talking car -- no matter what the makers of those portable GPS systems say.