While at home, Frasier says he has sung "Buttons and Bows" three times before during a PBS benefit. Later, while broadcasting his show, he contradicts himself, saying he has sung it twice before.
At 14:46 Martin says a flock of Canadian geese flew into the plane engine. The correct term is Canada geese.
When Frasier is preparing to sing at the PBS fund drive, the stage manager walks by and says, "Ten seconds, Dr. Crane." By the time Frasier actually goes on the air, 19 seconds have elapsed.
When Frasier appears on stage for the fund-raiser, the camera that is trained on him has no camera person working it, even after its red light goes on.
When Frasier is talking about the leap year on air, when the camera is on Roz you can see Frasier's reflection from the glass and his lips aren't moving as they should although he is talking at the same time.
In the opening scene, Frasier is on the balcony praising the rare 80 degree weather while proclaiming "...the middle of February!" Yet, the episode takes place on Leap Day, the last day of February.