Rosie O'Donnell was all smiles at a New York City Barnes & Noble store Tuesday while signing copies of her new memoir, Celebrity Detox, chronicling her painful childhood as well as her tumultuous cohosting stint on The View. Rosie, accompanied by her wife Kelli, posed for pictures with fans, belted out Broadway show tunes, and handed out Halloween candy corn to youngsters. Next up for Rosie includes attending the opening of her new art exhibit, "Solace," in New York City Tuesday night. - Reporting by Robert Moynihan