A performance by the Trans-Siberian Orchestra and the Young People's Chorus; Michael Strahan sits down for an interview with rapper Snoop Dogg; George Stephanopoulos talks with author Griffin Dunne; a look back at ABC's "Dancing with the Stars" 500th episode; Robin Roberts reports on her nephew's stem cell donor journey.

Lifestyle expert Michael Vignola shares ideas on how to make your New Year's Eve simple, special and spectacular; Dr. Adam Christman gives advice for new pet owners; The Right Stuff series with lifestyle contributor Lori Bergamotto and storage solutions ideas; Dr. Will Bulsiewicz and ways to boost your metabolism in the new year.