Those were 2 shows that I use to watch as a kid. Ian's description of WTGW's not what I remember. IIRC, there were 3 couples in each game. The announcer describes what the key word is to go for. Each couple has a chance to buzz in & write down what they think that word is. The host tries very hard to not say the correct word so the other couples can still play that word. Each key word has a total of 10 clue words related to it. If a couple gets the word right, they score a particular point value(1, 2, 3...all the way up to 10). There are no penalties for wrong guesses when you buzz in, however, if you don't get the key word after all 10 clue words were given, you got the penalty of having 11 points added to your score because in this game, the lower the score, the better your chances are of winning. There would be a series of these words untill a time's up sounder went off. As I said, lowest score wins & returns the next show.
As far as Celebrity Dominoes, players start to alternate calling celebrities untill a pair is revealed(1s, 2s, 3s, 4s, 5s & 6s). After revealing that pair, the celebriy tells a funny story that ends with the celebrity using a prop of some kind to signify a scrambled word that appears in their monitors. If the players don't get the word, letters start to be called from left to right untill someone buzzes in with that word. Whoever gets the word controls the board & looks for a domino that connects one of the mumbets. Play continues untill the board is filled. This would last about 3 rounds I think. Scoring is based on the dots. Each dot was worth a certain value I think. The player with the most points wins the game. Not sure if there was an end game but if there was one, I don't remember it.