Justice League Unlimited Season 3 Episode 12

When the three League members catch Dave Clinton stealing Batman's belt, Clinton drops it on the floor and leaves. However, at the end of the episode, he still has it.

In the scene where Batman is sitting at the table with GL, and WW is behind him, the alarm goes off. The camera quickly zooms into a view of Batman's face and Wonder Woman behind him. If you look at Batman's right "ear" he moves his head to the left, and leaves part of the ear hovering in mid air.

When the three League members catch David Clinton stealing Batman's spare utility belt, he drops it on the ground beside him and escapes. When the League members chase after him, the belt is nowhere to be seen.

When Green Lantern plows through the gate at the ranch, there's a cord hanging from the skull hanging above it. When the angle changes to have the gate in the background, the cord is no longer there.

When GL is "beaming" the futuristic debris away, the bubble itself is green but the ray going from his ring to the bubble is miscolored yellow.

When Sheriff Smith confronts Manning, he tosses away his guns. Then he fights him, knocks him out, bends over to take the chrono-belt, and the guns are instantaneously back in his holsters.

When Bat Lash and Manning square off against each other, you can see the three Leaguers behind them toward the saloon doors, Wonder Woman sitting on the left, Batman with his back square to the window behind him, and the piano off to their right, behind GL. Then they cut to a close up of the Leaguers and the piano is gone, and Wonder Woman and Batman are kind of sitting slant-wise toward the window. Then they cut away and back and in the next shot the piano is behind GL again. Then after Bat Lash is taken out Wonder Woman has her back almost directly to the window where Batman was about 20 seconds earlier. Then Wonder Woman leaves and Batman's back is finally directly against the window.

In the poker game, Manning spreads his cards - the four kings have the K indices on the upper-left/lower-right corners (correctly), but the A indice of the Ace is on the upper-right/lower-left. All five of Bat's cards (which include 4 aces) have the indices correctly on the upper-left/lower-right corners.

When the intruder alert goes off, only three Leaguers respond, even though at least six other members were in the immediate vicinity, including another founding member. We've also seen that the satellite has its own security, which would presumably respond to an alert.