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 14. Michael Keaton
1. March 29, 1982
2. April 28, 2015 (plus clip from May 20, 2015, taped on this day)
The 2015 guest appearance comes from Andrew Lynch's superb YouTube upload, linked here:    • Video