Deliberate mistake: After Ralph puts the suit into the trash can, when it cuts to Stovington Siding with the hijacked trains one of the shots is flipped, note the "102" is backwards. (00:24:40)
Just Another Three Ring Circus - S2-E12
Deliberate mistake: While they're in Yuri's tent, when Bill is standing in front of the tent wall Ralph describes all the good vibes he's getting about Yuri, and then Bill exits the tent. A few shots later, after the shot of the elephant sliding off the red pedestal, there's a shot of Bill standing in front of the tent wall, despite the fact that he left the tent, and note this shot is flipped. (00:10:50)