Anna KournikovaIt was just announced tonight during the finale of The Biggest Loser that tennis star Anna Kournikova would replace beloved celebrity trainer Jillian Michaels on the hit reality show, and already the snark mill (otherwise known as Twitter) is lobbing insults, skepticism, and criticism at NBC and the poor woman who hasn't even officially started yet. Even though Todd Lubin, an executive producer of the show, told Vulture that he and the other producers "intentionally tried to not replace" Michaels, you'll be hard pressed to find anyone but a few fans who are happy with the decision tonight.

Don't worry too much, Anna. People, by nature, can't handle change (although I guess this makes your new job double hard too).

So what does everyone have against Anna Kournikova anyway? Well, here are the top criticisms so far.

I'm often on the Internet while I watch my TV shows. I'm checking Facebook, I'm surfing around, I'm tweeting. But CBS just announced news that will take my multitasking to a whole new level! They are kicking off Tweet Week!

From April 3 through April 11, stars from their shows will be tweeting live during the shows. This hops on the trend led by my man Jeff Probst, the host of Survivor. The Probst has been tweeting live on Wednesday nights for the past few weeks.

Of course, it's a great way to get millions of people to follow their stars, ergo their shows, on Twitter. Sure, they use it to get publicity and higher ratings ... but I don't care. I'm all, well, I'm all atwitter!

In Season 17 of The Amazing Race, contestants traveled as far as Ghana and South Korea, they joined the circus and dressed in babushka-style drag, they ate sheep's head, and yes, one of them even got nailed in the head (poor Claire will never look at watermelon the same). But the most exciting feat came last night when two contestants made history.

Nat and Kat, the doctor duo from Scottsdale, Arizona, clinched the million bucks and became the first all-female team to win The Amazing Race.

So how did they do it? Their calm, laid-back style helped them sail all the way to the finish line.

Brook and Claire look like 'Amazing Race' champsThis week's episode of The Amazing Race was the last leg before the big season finale. That meant things were bound to get serious for the four remaining teams. Serious enough to introduce ninja warfare to the race? Well kind of ... at least for Brook and Claire.

Jill and Thomas This episode of The Amazing Race was an epic one. For the first time in the history of the show, we witnessed a Double U-Turn. That meant that not one, but two teams got to screw over fellow contestants as the teams headed to Bangladesh.

And while the double doozy didn't really shake up the finishing order, it did inspire some cattiness. Yes, finally the claws are out!

Chad & StephanieNo Jumbotron, skywriter, or ring-in-the-dessert for Chad. He proposed to girlfriend (and teammate) Stephanie the Amazing Race way -- at 6 a.m. in the Southwest Asian country of Oman.

Stephanie said yes, and the team's description at the bottom of the screen officially changed from "Newly Dating" to "Engaged." I'm just happy the two made it to their proposal because they got off to a pretty rocky start this episode.

'Amazing Race' Michael & Kevin: Rule Breakers?Whoa, whoa, whoa. Hold the phones. Did the producers make a mistake on this week's episode of The Amazing Race?

This leg was all about following the rules. Two teams -- Chad & Stephanie and Michael & Kevin -- were penalized for not following directions. And yet, it seems like the show forgot a big fat rule of its own.

Nick and Vicki survive another weekAfter watching Chad and Stephanie bicker once again this week on The Amazing Race, I realized something: this race might be the worst thing to happen to couples since Maury introduced the lie detector test on his show. 

Not that there's any baby-daddy drama on The Amazing Race, but the show does stir up all sorts of trouble between people who are supposedly in love. Why do the dating pairs fight more than any other teams?