Acting
Winchell's projects include the role of Sylvia in Wander Over Yonder, a Disney Channel animated series featuring Jack McBrayer in the title role. Created by The Powerpuff Girls producers Craig McCracken and Lauren Faust, the show chronicles the adventures of Wander and his trusty (and cynical) steed Sylvia, as they travel the universe. The series premiered on the Disney Channel in September 2013.
As a voice actress, she has been heard in hundreds of animated television series, such as Goof Troop (as Peg Pete), Recess (as Mrs. Muriel Finster), House of Mouse and Mickey Mouse Clubhouse (as Clarabelle Cow), Bonkers (as Lucky's wife, Dyl Piquel), Pepper Ann (as title character's mom, Lydia Pearson), and Kids from Room 402 (as Miss Gracie Graves the school teacher, along with several other characters that appear on the show), The Legend of Tarzan (taking over for Rosie O'Donnell as Terk in the original film), 101 Dalmatians: The Series (as Cruella De Vil), and SWAT Kats: The Radical Squadron (as Molly Mange).
She has also voiced characters in numerous films, including Antz, Who Framed Roger Rabbit, Monsters University and Rob Zombie's The Haunted World of El Superbeasto. Winchell portrayed the "Glendale Federal Bank" lady – a cranky, cynical customer alleviated by the service at her new bank – in a series of radio commercials, which Winchell wrote and directed herself. The commercials caught the attention of Roseanne Barr, who hired her as a writer on Barr's eponymous sitcom.