Lavando el carro del Sr. Barriga - S4-E4
Revealing mistake: When everyone is fighting with the water buckets, Don Ramón (Raymond) throws water at Quico. Doña Florinda (Mrs. Worthmore) chases Don Ramón inside the neighborhood. When Quico was about to throw water at Chavo, inside the door, the shadow of Don Ramón waiting for running so Quico can throw water at his mother. Plus, when Don Ramón and Doña Florinda runs outside the neighborhood, Doña Florinda is already covering herself in the last second before getting wet.
Lightspeed - S5-E8
Revealing mistake: When the HIVE Five exit the museum and are intercepted by Kid Flash, Mammoth loses both his pants and the artifacts he has before KF whizzes past him. It's best seen in slow motion; at normal speed this mistake is hard to catch.
Revealing mistake: Whenever Isis has to do jumps you can tell it's not her but a stunt double.
Revealing mistake: In the song "Living Island", we see Judy frog jumping over Pufnstuf. When she goes back down, the wires holding her up and putting her down are visible.
Take Me out to the Ballgame - S4-E3
Revealing mistake: When the fat guys are running down to stop the bad guys, you can see the blue safety mat that they land on just after jumping. (00:37:00)
Revealing mistake: Throughout Series 2 Eve's reptilian hand is a glove made out of rubber and you can tell whenever she bends her wrist and the "skin" twists and wrinkles. An obvious example of this is in Episode 6 when she has finished going through "Accelerated Learning" and removes the listening device, bending her wrist and the glove in the process.
Another Song for Christmas - S1-E13
Revealing mistake: The smoke from the supposedly broken vehicle is obviously not coming from the tailpipe. It is coming from the trunk.
Firefly, Light My Fire - S1-E1
Revealing mistake: Courage winces and reacts before the stereo-zapper is fired.
Revealing mistake: When Edward opens the gate to let Tracy in, we then see a shot of Tracy and you can see it is repeated footage of her from when she met Edward for the first time.
Revealing mistake: During Kendrix's morphing sequence you can see that the editor did a poor job photoshopping the Ranger helmet and you can still see the white edges of whatever photo they used. It should be tight to the Ranger's helmet and costume like the rest.