Dancing with the Stars: All-Stars eliminated two celebrity and professional pairings in a special double-elimination twist during Tuesday night's sixth live fifteenth-season results show on ABC.

Actress Kirstie Alley and professional partner Maksim Chmerkovskiy and actor Gilles Marini and partner Peta Murgatroyd became the seventh and eighth couples ousted from the competition after being declared the bottom-two couples based on the combination of the Dancing with the Stars judges' scores and home viewer votes they had received during the last two Monday night performance shows.

"The second time around, it was very special to me because to do it once was one thing, but to be asked to come back, first of all, was an honor. I learned more about dancing, believe it or not. I wanted to thank Maks because he's so patient with  me and he's so helpful to me. I just love dancing! I want to thank the judges because your critiques really helped me, so I want to thank our fans. I love you," Alley said following her ouster.

Monday night's broadcast featured each All-Star couple dancing an individual routine and a trio dance in which each couple chose an eliminated professional dancer or a member of the Dancing with the Stars Troupe "to enhance their routines and show off each star's greatest strengths," according to Dancing with the Stars co-host Brooke Burke-Charvet.

Last week's performance show featured each pair dancing an individual routine and participating in a "swing dance marathon." The three individual dances from both weeks were worth 30 possible points apiece, while the "swing dance marathon" was worth 10 possible points. The dancers could've been awarded 100 points total if they had received perfect scores all around.

Alley and Chmerkovskiy finished in seventh -- and last -- place on the two-week leaderboard. They danced a Viennese waltz routine which received 27 points from Dancing with the Stars judges Len Goodman, Carrie Ann Inaba and Bruno Tonioli in addition to a trio dance alongside pro dancer Tristan MacManus in the form of the paso doble which earned 24 points. When combined with the 28 out of 40 possible points they had received last week, the couple earned a total score of 79 points.

Marini and Murgatroyd finished in fifth place on the Week 8 leaderboard after they danced a quickstep routine which earned 29.5 points and their trio performance -- which was a salsa routine that featured pro dancer Chelsie Hightower -- that received 29 points from the judges. Combined with the 33.5 total points they had earned last week, the couple walked away with 92 total points.

"I felt it [coming] because of those cumulative scores for the last two weeks. It was a bit iffy, but in the end, it's just an incredible experience. I had a chance to do it twice. I tried my very best. Peta was an angel out there, teaching me amazing things," Marini said after he was eliminated at the end of the broadcast.

"And I want to thank my wife, because it's been quite a challenge for the family with all the jobs. And without her, I'm really nothing. I want to thank the producers of Dancing with the Stars, all the fans out there -- thank you for everything. I love you."

The Week 8 leaderboard was topped by Melissa Rycroft and professional partner Tony Dovolani, who maintained their first-place ranking after coming out on top in Week 7 as well. The reality TV star and Dovolani finished in first place after they received 99 total points over the two-week period.

The couple received two perfect scores of 30 for their quickstep routine and trio dance, which featured Troupe member Henry Byalikov joining them to perform a paso doble routine, on Monday night. Those scores were combined with the 39 possible points they had earned last week. 

Olympic gold medalist gymnast Shawn Johnson and partner Derek Hough finished in second place on the judges' leaderboard with 93.5 total points.

Johnson and Hough earned 29.5 points for their Viennese waltz on Monday night and 26 points for the samba routine they performed with pro dancer Mark Ballas -- who had stepped in for Hough last week due to a neck injury and previously been paired with Johnson when she won Dancing with the Stars' eighth season in 2009. Their total of 55.5 points Monday night added to their combined score of 38 points for their individual routine and "swing dance marathon" last week.
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Third place represented a tie between soap star Kelly Monaco and partner Val Chmerkovskiy and NFL football star Emmitt Smith and partner Cheryl Burke after both couples racked up a total of 92.5 points over the course of the last two weeks -- which included 28 points a piece for their individual Viennese waltz routines Monday night.

Combined with the 36 points they had previously received, Monaco and Val Chmerkovskiy also earned 28.5 points for their trio performance with pro dancer Louis van Amstel. The threesome danced a jive routine. 

Smith and Burke danced the salsa with pro dancer Kym Johnson for their trio performance, which received a perfect score of 30 points from the judges. The couple earned a combined total of 34.5 points for their fusion routine and swing dance performance last week. 

Olympic gold medalist speed skater Apolo Anton Ohno and partner Karina Smirnoff landed in sixth place on the judges' leaderboard with 91.5 total points. The couple performed a tango routine which earned 29.5 points and then a jive routine for their trio performance with Troupe member Sasha Farber which received 29 points from the judges. Ohno and Smirnoff received 33 total points last week for their individual routine and "swing dance marathon" performance.  

Also during last night's live results show, Monaco and Val Chmerkovskiy and Ohno and Smirnoff were in jeopardy to be eliminated from the competition alongside the bottom-two couples. However, Dancing with the Stars host Tom Bergeron and Burke-Charvet announced both pairs were not necessarily the other two lowest vote-getting couples.