Leonard King "Len" Lesser (December 3, 1922 – February 16, 2011) was an American actor. He was best known for his recurring role as Uncle Leo on Seinfeld, which began during the show’s second season in "The Pony Remark" episode.
Before he played the role of Uncle Leo, Lesser worked for years in film, TV and on stage. His resume includes projects with Clint Eastwood, Barbra Streisand, Lee Marvin, Dustin Hoffman and Steve McQueen. Lesser has appeared on American television steadily since 1955 on scores of TV classics such as The Monkees, "Bat Masterson," The Outer Limits, Alfred Hitchcock Presents, Get Smart, Quincy, The Rockford Files, Mad About You, All in the Family, Boy Meets World, and, most recently, Castle. He has also appeared in a variety of films such as The Outlaw Josey Wales, including a key role in the Clint Eastwood movie Kelly’s Heroes.
Death of Len Lesser
On February 16, 2011, Lesser died from cancer-related pneumonia in Burbank, California, at the age of 88.
"Can you blame her?"