Hollywood is full of super skinny celebrities, but it isn't often that the entertainment industry embraces fuller-figured talent.

That's why it made perfect sense when Oxygen's dance-weight loss reality show, 'Dance Your Ass Off,' nabbed curvy host Marissa Jaret Winokur -- who charmed audiences and won a Tony for her role in 'Hairspray' on Broadway, and danced her way to the semi-finals on season 6 of 'Dancing With the Stars' -- for its first season.

It's also why it's so disappointing that they've replaced Winokur with -- gasp! -- a skinnier host for season 2. Despite great ratings for season 1, Oxygen has announced that former Spice Girl and fellow 'DWTS' alum Melanie Brown, a.k.a. Mel B., is replacing Winokur as the show's host.

This week on TV: Dancing the pounds away, the kids are back to school in 'Degrassi' and -- boom! -- fireworks galore.

MONDAY, JUNE 29
'Dance Your Ass Off' (10PM, Oxygen) series premiere
What they hope to lose: pounds. What they hope to gain: the $100,000 grand prize that will go to the one contestant out of 12 who drops the most weight by shaking their moneymakers. The 'Biggest Loser'-meets-'So You Think You Can Dance' concept, hosted by Marissa Jaret Winokur, has attracted an eclectic bunch of contestants, including a former model whose career ended when she gained 55 pounds and several diabetics whose weight loss could save their lives. With the help of a doctor, nutritionist, trainer and two hours of dance practice a day, who will leave the show thinner ... and richer?

'The Bachelorette' – Jillian visits the finalists' hometowns (8PM, ABC)
'My Life on the D-List' – Kathy asks her mom to create a Facebook page for her (10PM, Bravo)
'Weeds' – Celia camps out in Nancy's garage (10PM, Showtime)
'New York Goes to Work' – 1st season finale (10PM, VH1)
'Nurse Jackie' – Zoey loses her first patient (10:30PM, Showtime)

Got a burning TV question? Ask The Show Girl! This week I talk TV with 'Dance Your Ass Off' host Marissa Jaret Winokur and reveal my new favorite celebrity Tweeter.

I also get the scoop on tabloids from Selena Gomez, who's starring in Disney Channel's new original movie 'Princess Protection Program,' and answer fan questions about 'Dexter' and HBO's new series 'Hung.'

To get your questions answered on The Show Girl, just email me at TheTVShowGirl@aol.com. And don't forget you can also subscribe to The Show Girl video podcast on iTunes. Now watch, enjoy and come back next week for more. Until then, happy TV watching! -- By Maggie Furlong

With the second week of competitions tonight on So You Think You Can Dance, I wanted to point out a trend: reality dance show contestants can't leave television. Several contestants and a few choreographers have jumped ship and have appeared on other reality shows.

The jump basically can plant an already established fanbase onto a different television show. One great example is Ty Murray on Dancing with the Stars. I'm not sure what the percentage of votes for Ty came from fans of Chelsie Hightower and her work from SYTYCD or his charm, but he definitely benefited from someone who knew to make routines that were camera friendly.

With the latest seasons of Survivor, The Amazing Race, and American Idol wrapping up, fans patiently have to wait until the fall or spring 2010 for their favorite shows to return. But why wait? Several reality TV shows debut in the summer both as lighter fare than fall shows and a way to test for target audiences.

If one recalls, several summer reality TV shows have eventually moved to prime real estate in the fall or spring. If rumors are true the summer favorite So You Think You Can Dance will be the next to move, airing in the summer and fall.

Here are some alternatives for your favorite reality TV shows.