Ace, realizing Jimbo has special powers, asks him for a quarter which he flips and asks Jimbo to change to flip. Ace then rolls a pair of dice, one of which comes to rest about 6 inches from the quarter with the second die stopping on the edge of the bed about 18 inches from the quarter. In the close up a pair of dice are visible about 6 inches apart, and the second one is no where near the edge of the bed.
At one point (about 18:00), the money stacked on the floor has all of the printing backward but in other shots it is normal again.
When Ace and Jimbo first go to the casino, the dealer calls "7, a winner" on one of the rolls before the dice have come to a stop.
In the beginning when Ace plays the slot machine and loses we see a close up of the losing combination. There is a cherry on the third reel at top (above the pay-line) yet there is no payout listed on the pay table (on the left side of the machine) for 3 cherries.
When Ace and Jimbo run out to the car just after it crashes, there are electric sparks all over it, but on the opposite side of the car, you can clearly see that the sparks are being created by some fuses, like firework fuses, burning.
When Jimbo levitates the phone to answer it from the desk to his bed (about 16:00) the wire suspending it can be seen as the phone moves across the room.
When Jimbo lifts his bed to reveal his telekinetic powers, a wire at the centre of the foot of the bed is clearly visible.