When the Imagination Station melts down, scenes from these episodes can be heard: "The Imagination Station, I", "Elijah, II", "Lincoln, II", "Back to Bethlehem, III", "The Star, II", "Isaac the Chivalrous", "Moses: The Passover, I", "The Mortal Coil, I", "The Potential in Elliot", "St. Paul: The Man from Tarsus", "A Touch of Healing, I", "The Time Has Come", "The Tower", "Blackgaard's Revenge, II", "The Big Deal, I" and "The Black Veil, II".
The last minute of the countdown is presented in real time. Check it with your computer clock and the second hand; from when the timer starts beeping signaling one minute to go to when Tom pushes the button 59.5 seconds passes. That means Tom pushes the button with a half a second to spare.
Reponse to above trivia: But right before Mr. Charles finds a malfunction, his assistant states there is 5 seconds to go.