Here are some commercials that aired during an episode of Quantum Leap & part of the Channel 3 News at 11:00pm:
1. Little Caesar's Pizza! Pizza!
2. Pillsbury's 8 Quick Crescent Rolls
3. Arrid Extra Deodorant
4. Baywatch/True Blue/Mancuso, FBI NBC promos
5. Quantum Leap bumper
6. Eagle Talon TSi
7. Promise Extra Light Butter
8. Instant Quaker Oatmeal
9. Chef Boyardee Microwave Meals
10. Midas
11. Kellogg's Crispix
12. Burger King
13. (part 2 of #11)
14. 'Quantum Leap' will be right back
15. NBC's Night of A Thousand Laughs II promo
16. The Skin Game Channel 3 News promo
17. Kronheims Furniture & Interiors
18. WNCX 98.5
19. Hard Copy Channel 3 promo
20. (same as #5)
21. I Can't Believe It's Not Butter!
22. Red Lobster
23. Du Pont Stainmaster Carpet
24. Tylenol
25. Unsolved Mysteries NBC promo
26. Volkswagen
27. Stouffer's Lean Cuisine
28. Quantum Leap end credits (w/audio promo)
29. Belisarius Productions/Universal Television (1990)
30. The Tonight Show with Johnny Carson NBC promo
31. Next on Channel 3 News at 11:00pm...
32. Walt Disney World
33. Dairy Queen
34. Milk!
35. WKYC-TV Channel 3 News at 11:00pm open (2/7/1990)
36. Coming Up Next...
37. Perkins Family Restaurant & Bakery
38. Hawaii
39. Stop n' Shop
Video footage courtesy of everyone at archive.org