As NBC's Parenthood brings a new version of the Ron Howard film to our television screens, we wonder: How does it compare to other reboots? Take a look back at some of the best (and worst) remakes in recent memory.

In arguably the most successful reboot ever, Ron Moore brought the beep-boop tackiness of the 1970s original down to a more relatable level, in the process creating a sci-fi narrative that's notable for its humanity.

Things have definitely changed at West Beverly High. The students still have their share of teen angst, love triangles and hard-hitting high school issues, but something about the original Beverly Hills, 90210 was just more fun and soapy. The reboot seems to take everything a bit too seriously and always goes way over the top with its storylines. (Like when Silver turned bipolar in 3.2 seconds.)

ABC's remake of the '80s sci-fi series sticks to the original's premise: Lizard-people aliens invade Earth. But the new version is so slick it loses some of the original's low-budget charm. Yes, the original V was terrifying. But it was the kind of terrifying you could laugh about later. (Sometimes much later.) The new V has proven itself as a sci-fi action drama. Now it can loosen up.

Everyone can relate to the idea of twentysomethings living together in one apartment, whether you're in your twenties or wish you were. (What teenager hasn't expected life to be just like this?) The new Melrose Place mucked up the simple setup with a less-than-compelling murder-mystery storyline. The old cast has appeared in dribs and drabs, and we're keeping the faith that Heather Locklear will turn things around as Amanda Woodward.

The original was the thrilling story of a modern-day (in the '80s, anyway) knight who dispensed justice with the aid of a talking Trans Am and one of the coolest theme songs ever. The new version was a car commercial. And though new voice-of-KITT Val Kilmer is indisputably cool, no one's delivery could rival that of original KITT William Daniels, who played KITT as a kind of synth-voiced Alex Trebek.

The original was a spin-off of The Six Million Dollar Man, but the show's 2007 reboot just fell too far from the bionic tree. Michelle Ryan was an inspired choice in the title role, although the writers may have gone too far to make her relatable: Her bartender was no match for Lindsay Wagner's tennis pro. That wasn't the new woman's major problem. The 2007 writers' strike interfered with production on the quickly canceled series.

The bald head, lollipop and catchphrase ("Who loves ya, baby?") were all present when Ving Rhames slipped into Telly Savalas' big shoes for a 2005 USA Network remake of the seminal 1970s cop drama. The new version, however, didn't have the staying power of its predecessor and lasted only one season.

You can't accuse Hollywood of not giving the Eastwick witches a chance. The John Updike novel The Witches of Eastwick first spawned the 1987 film of the same title, then failed televised attempts in 1992 and 2002. The cancelled 2009 edition tried to break the — yep, we’re going there — TV curse, but didn't cast a spell on audiences. Or work ratings magic. You get what we're saying.

The only thing that keeps this year's Star Trek summer blockbuster from being the coolest reboot ever is that it may not qualify as a reboot. Yes, it had new actors in the key roles, sort of (Spock was played by Leonard Nimoy and Zachary Quinto). But some crazy plot twists made this version more an alternate reality of the original series than a total reimagining. We hope Khan is still in the new cast's alternate future.

Maybe it did need Arnold. On paper, the Fox series, which was set after Terminator 2: Judgment Day, sounded like a surefire hit. But with its small-screen budget, it failed to follow in the big-screen Terminator films' thundering footsteps and got axed after two seasons. Or ice-picked, for all you T-1000 fans.

Ten years after 10 Things (an adaptation of The Taming of the Shrew) made the late Heath Ledger a star, ABC Family resurrected the teen classic for the boob tube. Some cried "too soon" following Ledger's death, but the slightly tweaked series became a hit and will return for a second season.