This collection is uploaded in multiple parts. This is Part 1.

1. March 1, 1982*
2. January 5, 1983
3. November 21, 1983
4. January 9, 1985. Roger Ebert only
5. September 11, 1986
6. October 2, 1986. Viewer Mail
7. October 29, 1986. New Halloween Costumes
8. August 14, 1987. Viewer Mail
9. May 3, 1989. Chicago cameo backstage
10. May 4, 1989. Chicago Wacky Props
11. September 12, 1989

Previously uploaded:
*March 1, 1982:    • Siskel & Ebert on Letterman, March 1,...  

Other Parts here:
Part 2: 199091    • Siskel & Ebert Collection on Letterma...  
Part 3: 199293    • Siskel & Ebert Collection on Letterma...  
Part 4: 1994    • Siskel & Ebert Collection on Letterma...  
Part 5: 199596    • Siskel & Ebert Collection on Letterma...  
Part 6: 19972000    • Siskel & Ebert Collection on Letterma...