Edward Brophy was in The Thin Man with William Powell.
Powell was in How to Marry a Millionaire with Marilyn Monroe.
Marilyn Monroe was in Some Like it Hot with Jack Lemmon.
Lemmon -> Pesci -> Samuel L. Jackson, like before.
I could have also gone Brophy -> Cesar Romero -> Kurt Russell -> Robert DeNiro -> Pesci -> Sammy.
Joseph Baldwin (cousin of the famous Baldwins)