Tributes to David Letterman, Part 17 of 31: Steve Martin 1980, 2015

To commemorate the 5th anniversary of Dave retiring from late night television (his last show was on May 20, 2015), I've put together a series of "first and last" appearances, the latter paying tributes in their own ways to the last giant of late night (h/t Jason Zinoman).
Part 17. Steve Martin
1. September 30, 1980
2. May 1, 2015
The 2015 guest appearance comes from Andrew Lynch's superb YouTube upload, linked here: https://www.youtube.com/watch?v=7zqTPxBnjFU&t=250s
and the music performance here: https://www.youtube.com/watch?v=q0A2B5LA1kw

Видео Tributes to David Letterman, Part 17 of 31: Steve Martin 1980, 2015 канала Don Giller