The latest in the series of dance-off challenge videos going on between the Step Up (AC/DC) crew and the gang of dancers backing Miley Cyrus and her buddy Mandy Jiroux has surfaced on YouTube.

As usual, there’s dancing and jumping around and appearances by various celebrities looking to get in on the hoofing. Keep your eyes peeled for the awkward-looking Carson Daly and Emmanuelle Chriqui (You Don’t Mess with the Zohan), as well as a creepy David Blaine.

Other notable cameos include Ryan Seacrest, Joey Fatone and Tatum Channing. Nicole Richie had planned to make the shoot, but was unable to since it was on Mother’s Day and she’s such a dedicated mother, you know.

Mandy just revealed during an interview on Seacrest’s KIIS-FM radio show that Miley does not have a new boyfriend. “She’s not dating a backup dancer or a 22-year-old. She’s totally single.” And dancing her little heart out.