Dave conducts a press conference announcing his move from his then-current network to CBS just after Jay Leno had held his own press conference in California to reaffirm his own job as Tonight Show host.
The history behind this event could fill a book, and it actually has, in Bill Carter's _The Late Shift: Letterman, Leno, and the Network Battle for the Night._
This is the raw, unedited footage.
Siskel and Ebert had appeared on Late Night around an hour earlier, thus their presence here. After the press conference ended, Gene offered his take on the impact of what this all might mean.
Great thanks to A. I. for the video.