Every late night host is saying goodbye to David Letterman in their own way. What many fans of Jimmy Kimmel Live may not realize is that David Letterman had a huge impact on Jimmy’s life. Even as a youngster, his mom made him a Late Night birthday cake. On his first car, his license plate read “L8 NITE.” Jimmy Kimmel might not have become a late night host himself it it wasn’t for David Letterman.