Top Videos: Meredith Vieira's YouTube Channel, Norris Spoils Breaking Bad, Ravenswood Trailer

This week, Miley Cyrus introduced twerking to the masses at MTV's Video Music Awards — and inspired some hilarious reaction shots. Dean Norris "spoiled" the end of Breaking Bad, Judge Judy staged a flash mob, and the cast of Bunheads made a farewell video for its fans. Meredith Vieira also launched her own YouTube channel and the official trailer for Ravenswood premiered. Check out those clips and more in our weekly roundup of the best online videos:

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Miley Cyrus' VMA performance: Obviously the hot topic of the week has been Miley Cyrus', um, attention-grabbing duet with Robin Thicke at the MTV Video Music Awards Sunday. But even more entertaining than the original performance (available here if you haven't seen it) is this "reaction video," featuring Hank (Dean Norris) and Marie (Betsy Brandt) from Breaking Bad.

Dean Norris spoiling Breaking Bad: Speaking of Breaking Bad, in this Funny or Die video, Dean Norris "spoils" the show's final scene — or at least what it would be if he were in charge of writing the script. Bonus points for Hank's "Tweaker Hunter" T-shirt.

Aaron Paul's Breaking Bad audition tape: OK, one more Breaking Bad video. Though his signature "bitch!" catchphrase would come later, early signs of Jesse Pinkman are evident in Aaron Paul's audition tape for Breaking Bad.

Meredith Vieira's new YouTube channel: Meredith Vieira has launched her own YouTube channel, LIVES, "dedicated to bringing women of all ages, shapes, colors, and sizes together to share their stories and learn from each other." The channel won't debut its first series until Sept. 9, but check out Vieira's intro video below. (via Tubefilter)

Judge Judy flash mob: What better way to celebrate the Season 18 (!!) premiere of Judge Judy than with a flashmob? Unfortunately, Judy Sheindlin herself doesn't make an appearance in the video, but it's pretty impressive nonetheless. And the song's not half-bad, either.

Bunheads farewell video: Bunheads fans can get some closure from this farewell video, which features cast members performing some of their more memorable dance routines from the recently-canceled ABC Family show.

Sumatran Tiger cubs livecam: Get ready for your weekly dose of "awww!" A rare Sumatran tiger named Kaitlyn recently gave birth to two cubs at the Australian Zoo, and The Pet Collective has set up a livecam so that viewers around the world can monitor their development. (via Tubefilter)

Ravenswood trailer: Check out the first official trailer for ABC Family's upcomingPretty Little Liars spin-off, Ravenswood, which premieres on Oct. 22.