Seth talks about only smoking weed twice a year, the family tale of stashing his grandpa's girlfriends underwear in various places around the house and passing it between family members, his obsession with Frank Sinatra, meeting Frank Jr and Tina Sinatra, and his album 'Lush Life: The Lost Sinatra Arrangements.' You can see Seth perform at the Voltaire in Las Vegas July 3rd, 4th and 5th! Watch 'Jimmy Kimmel Live!' WEEKNIGHTS 11:35/10:35c on ABC. Stream on Hulu.