for his 2007 album Rufus Does Judy at Carnegie Hall Teddy Wilson & His Orchestra, with Billie Holiday, recorded this song on January 6, 1938, in New York City for Brunswick/Columbia, with Teddy Wilson on piano, Benny Morton on trombone, Buck Clayton on trumpet, Lester Young on tenor sax, Freddie Green on guitar, Walter Page on bass and Jo Jones on drums. In popular culture In "The Rock Vegas Story" episode of The Flintstones, first aired March 30, 1962, Barney and Betty Rubble perform the song At the start of each episode of The Comedians, first aired June 12, 1971, Shep's Banjo Boys are seen playing an instrumental version of this song, underscoring the opening credits. In the Seinfeld episode "The Jimmy", Mel Torme dedicates the song to Kramer. The song was sung by Rachel Berry (Lea Michele), a character on the television series Glee, in the episode "Mattress". The version recorded by Louis Armstrong was featured in an advertisement for Apple's new iPhone 4 in 2010. It had previously appeared in a commercial for Kodak. The Louis Prima version is featured in the 2010 video game Mafia II on the fictional Empire Classic Radio station during the 1951 section of the game and also during the end credits. This version also appears in the movies Analyze This, directed by Harold Ramis, Anger Management, directed by Peter Segal, and Find Me Guilty, directed by Sidney Lumet. In the Nickelodeon TV series The Backyardigans, the song's tune is used in an episode titled "It's Great to be a Ghost!". At the end of the 1995 Woody Allen movie Mighty Aphrodite the Greek chorus sings a version of this song. At the end of the Everybody Loves Raymond episode "Sweet Charity" (Season 7, Episode 16), Debra Barone (Patricia Heaton) sings the song in front of a group of unhappy hospital patients. At the end of the 2003 movie Windy City Heat the song is used over a montage of the main characters. Pablo Bubarre introduced "When You're Smiling" in one of the musical romance sketches of "Pablo the Romantic" from Boom Town, broadcast by BBC Three (UK, 2013). This version includes the piano music of Ross Leadbeater. The song is sung by Roberta Flack in the 1971 film $ ("Dollars"). It was adopted by Leicester City F.C. as the club anthem and can be heard at many of the team's games. The