The exact broadcast date of this show was February 23, 1978 (the end credits have a voiceover promoting the debut of "Quark" the next night). This is the only episode other than the premiere of the show from October 3, 1977 that's in the game show trading circuit (a third episode from March 17, 1978 can be seen at the Museum of TV/Radio in NY).
Some of the sound effects used were from the following: the bell from "Wheel of Fortune", the buzzer from "The Gong Show", and the beep from "Scrabble"...all from NBC.
I should mention that the jackpot actually started at $2,000 and went up by $1,000 for every failed attempt. Even in 1978, $2,000 wasn't much in bonus round prize money-- $5,000 would've been a better starting point for the jackpot.
I dont like the scoring format it makes the first 3 rounds pointless, If I were to revive it: 4 words: $500, 3 words: $1,000, 2 words: $2,000 1 word: $5,000, if you failed at a level you could try again with the next celebrity but you stayed at that level.