Regarding TPiR, first the obvious differences:
Daytime (when it was still 30 minutes):
- Hosted by Bob Barker
- Johnny Olson says "A fortune in fabulous prizes may go to these people today, if they can tell when the price is right!"
Nighttime:
- Hosted by Dennis James
- "A fortune in fabulous prizes may go to these people tonight..."
For the more subtle differences, one involved the showcase. The daytime version had a commercial between the second showcase bid and the price reveal; the nighttime version, did not. But that resulted in an odd effect; you know how they put those cards in the showcase podiums that identified who bid on which showcase (e.g., "Sailboat","Living Room", I actually once saw "Elevator" when they did the dept. store theme)? On the nighttime shows, as soon as they cut back to the contestants, the labels were already there! This also meant they put the price tags in those little side podium pockets during that time. I thought it was kind of "sneaky", like, you knew the crew was busy there while you weren't looking!
Another subtle difference was in the Range Game. I remember noticing that the Range Finder at night covered a $200 field, while on a daytime show that aired shortly thereafter had it cover only $150. Was this because they wanted more winners on the nighttime shows? Or was it because the game was still new, and the gameplay was still being fleshed out.
Finally, is it just me, or did the nighttime shows have, on average, more expensive IUFB prizes. I
think it was Dennis James who announced the first 4-digit IUFB that I ever heard: "One THOUSAND, two-hundred and seventy-nine dollars" (or was it 75?).
Who remembers the short-lived nighttime version of (Trebek) Jeopardy!? They had higher dollar values on the board, and there were 4 contestants instead of 3. Of course, this show was actually titled "Super J!", but hey...