Answer the question at the end by quoting:

Francis Albert Sinatra was born on December 12, 1915, in an upstairs tenement at 415 Monroe Street in Hoboken, New Jersey. He was the only child of Italian immigrants Antonino Martino "Marty" Sinatra and Natalina "Dolly" Garaventa. Sinatra weighed 13.5 pounds (6.1 kg) at birth and had to be delivered with the aid of forceps, which caused severe scarring to his left cheek, neck, and ear, and perforated his ear drum, damage that remained for life. Due to his injuries at birth, his baptism at St. Francis Church in Hoboken was delayed until April 2, 1916.
Sinatra attempted to pursue an acting career in Hollywood in the early 1940s. While films appealed to him, being exceptionally self-confident, he was rarely enthusiastic towards his own acting, once remarking that "pictures stink". Sinatra made his film debut in 1941, performing in an uncredited sequence in Las Vegas Nights, singing "I'll Never Smile Again" with Tommy Dorsey's The Pied Pipers. In 1943 he had a cameo role along with Duke Ellington and Count Basie in Charles Barton's Reveille with Beverly, making a brief appearance singing "Night and Day". The following year he was given his leading roles in Higher and Higher and Step Lively for RKO Pictures.  In 1945, Metro-Goldwyn-Mayer cast Sinatra opposite Gene Kelly and Kathryn Grayson in the Technicolor musical Anchors Aweigh, in which he played a sailor on leave in Hollywood for four days. A major success, it garnered several Academy Award wins and nominations, and the song "I Fall in Love Too Easily", sung by Sinatra in the film, was nominated for the Academy Award for Best Original Song. In 1946, Sinatra briefly appeared at the end of Richard Whorf's commercially successful Till the Clouds Roll By, a Technicolor musical biopic of Jerome Kern, in which he sang "Ol' Man River.  In 1949, Sinatra co-starred with Gene Kelly in the Technicolor musical Take Me Out to the Ball Game, a film set in 1908, in which Sinatra and Kelly play baseball players who are part-time vaudevillians. He teamed up with Kelly for a third time in On the Town, playing a sailor on leave in New York City. Today the film is rated very highly by critics, and in 2006 it ranked No. 19 on the American Film Institute's list of best musicals. Both Double Dynamite (1951), an RKO Irving Cummings comedy produced by Howard Hughes, and Joseph Pevney's Meet Danny Wilson (1952) failed to make an impression. The New York World Telegram and Sun ran the headline "Gone on Frankie in '42; Gone in '52".

Was he in any other films?

The following year he was given his leading roles in Higher and Higher and Step Lively for RKO Pictures.

IN: Cosmo Kramer, usually referred to as simply "Kramer", is a fictional character on the American television sitcom Seinfeld (1989-1998), played by Michael Richards. The character is loosely based on comedian Kenny Kramer, Larry David's ex-neighbor across the hall. Kramer is the friend and neighbor of main character Jerry, residing in Apartment 5B, and is friends with George and Elaine. Of the series' four central characters, only Kramer has no visible means of support; what few jobs he holds seem to be nothing more than larks.

The character of Kramer was originally based on the real-life Kenny Kramer, a neighbor of co-creator Larry David from New York. However, Michael Richards did not in any way base his performance on the real Kramer, to the point of refusing to meet him. This was later parodied in "The Pilot" when the actor that is cast to play him in Jerry and George's sitcom refuses to base the character on the real Cosmo Kramer. At the time of the shooting of the original Seinfeld pilot, "The Seinfeld Chronicles," Kenny Kramer had not yet given consent to use his name, and so Kramer's character was originally known as "Kessler."  Larry David was hesitant to use Kenny Kramer's real name because he suspected that Kramer would take advantage of this. David's suspicion turned out to be correct; Kenny Kramer created the "Kramer Reality Tour", a New York City bus tour that points out actual locations of events or places featured in Seinfeld. The "Kramer Reality Tour" is itself spoofed on Seinfeld in "The Muffin Tops." In the episode, when Kramer's real-life stories are used by Elaine to pad the biography of J. Peterman she was ghostwriting, he develops a reality bus tour called "The Peterman Reality Tour" and touts himself as "The Real J. Peterman," even though, as Jerry notes, reality is the last thing Kramer is qualified to give a tour on.  Richards' physicality can be seen in his early 1980s appearances on The Tonight Show, the early 1980s ABC sketch comedy show "Fridays", and his appearance in the film "Young Doctors in Love" where he plays a hit man; a nod to this appears in the "Air Conditioner" episode.

Who played Kramer in the sitcom?

OUT:
Richards