Peter Lassally started out working for Johnny Carson in the 1970's as
the associate producer of "The Tonight Show.", and rose to Executive
Producer with Fred De Cordova by 1992. When Carson retired in 1992,
Lassally moved to be Executive Producer of David Letterman's NBC night
time show "Late Night", co-owned by Carson Productions at the time. He
moved with Letterman to CBS to the "Late Show" in 1993. He was later
replaced by Letterman writer Rob Burnett as Executive Producer of Late
Show.
Produced both of David Letterman's night time programs "Late Night" and
the "Late Show" (when it moved to CBS).
Even though he is not involved in the day to day production of The Late
Show anymore, he is still a consultant for Worldwide Pants Inc, the
company that produces The Late Show, as well as other ventures.