Trivia

Met her husband on the set of The Cable Guy (1996), a movie he produced.

Has two daughters, Maude Apatow (born 1997) and Iris Apatow (born 2002), with husband Judd Apatow.

Prefers her name to be pronounced "Less-lee", not "Lez-lee", despite having allowed her husband Judd Apatow to say "Lez-lee" for over 18 years.

The Cable Guy (1996) co-star Jim Carrey described her looks as bearing resemblance to Marlene Dietrich. Others see a likeness to Sheri Moon Zombie.

Leslie's father is of Irish and German ancestry. Leslie's maternal grandfather, Thomas Hamilton, was a Scottish immigrant, while Leslie's maternal grandmother, Sadie Heljä Viola Räsänen, was born in Michigan, to Finnish parents.

Leslie's maternal grandmother, Sadie Räsänen, was born in Baraga, Michigan. By 1940, she had moved to lower Michigan and became a telegraph operator. Leslie's great-grandfather, Peter Räsänen, worked at the Ford saw mill in Baraga. He was a fireman (stoked the steam plant boilers) and later became a stationary engineer. Ford Motor company used a tremendous amount of wood to produce automobiles in the early years. They had substantial timber interests in Michigan's Upper Peninsula. Eventually, Ford spun off their wood production interests. One of the spin-offs became Kingsford charcoal.