This week, Mariah Carey performed "All I Want for Christmas Is You" live at the Rockefeller Center Christmas tree lighting, making a strong case that the producers should probably just hire the girl from Love Actually for next year's ceremony. In other festive news, Reese Witherspoon sang random Christmas carols with Jimmy Fallon. Also, the cast of Dr. Quinn, Medicine Woman reunited for a Breaking Bad-esque reboot, and a pug experienced the unbeatable bliss of getting a bath in the sink. Check out those clips and more in our weekly roundup of the best online videos:

Mariah Carey's Rockefeller tree lighting performance: All we want for Christmas is for Mariah Carey to lip-sync along to her original, prerecorded version of "All I Want for Christmas Is You," as she was originally supposed to do. We'll let this live performance sing for itself.

Reese Witherspoon random phrase Christmas carols: Is there anything not to like about Reese Witherspoon? The actress played a musical game with Jimmy Fallon on The Tonight Show this week, incorporating random phrases into popular Christmas carols. We just wished she would have danced along with them.

Honest Trailers - Love Actually: Feel-good holiday movie, or depressing sob-fest? Love Actually gets the Honest Trailers treatment this week, and makes us rethink everything we thought we knew about this festive rom-com. (And yes, that's Sheriff Rick in the pic.)

Dr. Quinn, Morphine Woman: Dr. Quinn, Medicine Woman meets Breaking Bad in this hilarious parody from Funny or Die, promoting a new reboot. "This isn't your grandma's Dr. Quinn." Check it out below.

Pug takes a bath: What does pure, unbridled joy look like? See Exhibit A: Barry the pug, as he gets a bath in the sink.

Newsreaders : This clip from Adult Swim's hilarious series Newsreaders features sexist news correspondent Skip Reming (Ray Wise) interviewing his guest stars, Children's Hospital's Ingrid Halstrom (Malin Akerman) and Rob Riggle (as himself).

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