Continuity mistake: When Al Bundy drops the stiletto shoe into the fish tank, he reaches down into the tank to get it and his sleeve and hand are dry as he shows the shoe. Also, hardly any water drips off the shoe. (00:17:00)
Other mistake: When at the gas station, they are out of gas. He doesn't put any gas in but later Peggy starts the car up and drives away.
twstr988Cheese, Cues and Blood - S6-E4
Continuity mistake: When Kelly shakes her head no to the guy she is playing for $10,000, he misses the shot and the ball stops at the far end of the table. When Kelly goes to take the next shot for the win, she is hitting the cue ball from the other side.
twstr988Revealing mistake: While they are jousting, there is no one at all next to the stage in the wide shots. Every time they show the stage up close, there are 40-50 people. It changes back and forth the whole scene.
twstr988Continuity mistake: At the airport outside, Marcy yells at Jefferson and knees him. While she does that, there is a man wearing a white coat walking behind them. Camera instantly changes and there is no man at all in a white coat. In fact, there is now a woman wearing a white coat.
twstr988She's Having My Baby (1) - S6-E1
Continuity mistake: In the prior episode, when Peggy tells Al she is pregnant, Jefferson just smiles at Al after she tells him. In this episode, at the beginning, when Peggy tells Al she is pregnant during the recap, Jefferson smiles at Al but also pats Al on the shoulder.
twstr988The Mystery of Skull Island - S6-E14
Continuity mistake: When the grown-ups are playing 'Ethical dilemma' Peggy lands on the field 'Sexual intimacy' (the field right after 'Start' with a one-word-title). Four minutes later in the show Al lands on the same field - but now it's 'Caring'. They can't have turned the game board because all the cards on it are in the same position. (00:09:40 - 00:13:40)
Answer: According to IMDb and some Married with Children fan sites it's Frank Sinatra who sings the theme song.
Andreas[DK]