He voiced Speedy Gonzales in The Looney Tunes Show. What actors and actresses appeared in The Lawrence Welk Show - 1951 The cast of The Lawrence Welk Show - 1951 includes: Myron Floren as. His notable celebrity impressions included Prince, Liberace, Ringo Starr, former New York governor David Patterson (which offended the real Patterson due to Armisen allegedly making fun of his blindness), Barack Obama (which caused minor controversy, as Armisen isn't African-American and Saturday Night Live passed up on Jordan Peele and Donald Glover as potential cast members to play the former President), and Lawrence Welk. In Saturday Night Live, he was known for playing characters who were foreign-born (often sharing his Hispanic and/or Asian heritage) or had musical talent. Armisen was on the show from Seasons 28 to 38 (2002 to 2013), becoming the show's longest-staying Hispanic and Asian cast member (Armisen has a Venezuelan mother and a German and Japanese father). Bandleader Lawrence Welk, the North Dakota-born accordion player whose bubbly 'champagne music' and indefatigably wholesome style made his long-running television program an American. Fred Armisen (born 4 December 1966) is an American comedian, musician, and actor, best known for his roles on the NBC sketch show, Saturday Night Live.