ET was on the red carpet with former "Dancing with the Stars" contestant David Alan Grier to see if he still remembers his steps while at the premiere of his new film 'Dance Flick.' David joins the new and old generation of the Wayans family for this flick. Directed by Damien Wayans , written by Keenen Ivory and Shawn Wayans , and starring Damon Wayans Jr. , this comedic film was a family affair. "It's the funniest dance movie of all time because we did it," Shawn tells ET. Continue reading... Related stories: 'Inglourious Basterds' Premieres to Standing Ovation Robert Pattinson's 'Inglourious Basterds' Red Carpet Arrival