The fourth season of America's Best Dance Crew premiered on August 9, 2009. All three regular judges, host Mario Lopez, and backstage correspondent Layla Kayleigh returned. This was the last season to feature Shane Sparks as a judge. In the live finale, which aired on September 27, 2009, We Are Heroes was declared the winner.

Cast

Nine dance crews were selected to compete on America's Best Dance Crew.

Results

Episodes

Episode 1: Crew's Choice Challenge

The nine new crews chose songs that best showcased their talent in the season premiere. After the bottom three was chosen by the judges, the crews had to face each other in a dance battle to "Boom Boom Pow" by The Black Eyed Peas.

Episode 2: Beyoncé Challenge

Beyoncé stopped by to hand out the challenges for the crews, who had to use her music videos and tour performances as inspiration for their routines.

Episode 3: Martial Arts Challenge

The crews had to incorporate martial arts moves into their routines. Quest Crew's Steve Terada appeared as a guest instructor.

Episode 4: Bollywood Challenge

The six remaining crews were challenged to infuse the flavor of Bollywood culture into their routines. In order to learn the complex Indian-themed dance style, the crews met with Bollywood choreographer Nakul Dev Mahajan.

Episode 5: Dance Craze Challenge

The five remaining crews put their own spins on popular dance crazes. In addition to the challenge, the crews also had used the trampoline built into the stage sometime during their routines.

Episode 6: VMA Challenge

The final four crews paid tribute to memorable performances from the MTV Video Music Awards. The crews performed together in an opening number to "Smooth Criminal" by Michael Jackson.

Episode 7: Decades of Dance Challenge

The crews competed against each other in two challenges: the Decade of Dance Challenge, in which the crews danced to a mix of five songs from the past five decades, and the Last Chance Challenge.

Challenge #1: Decades of Dance Challenge

The remaining three crews had to master dance styles from the last five decades. One crew was eliminated halfway through the show.

Challenge #2: Last Chance Challenge

The two finalists were given one last chance to perform before the lines opened for the final voting session of the season.

Episode 8: The Live Finale

All nine crews returned for a group performance in the season finale. The judges each picked three crews that complemented each other and their dance styles. Then, the winner was crowned.