Continuity mistake: When Kim and Shego stop chasing Ron back in Drakken's lab Shego is wearing a purple apron, then the camera moves away Shego and Kim then comes back and Shego is not wearing a purple apron, then the camera moves away again and then comes back to her and now she is wearing the apron.
Sasuke and Sakura: Friends or Foes? - S1-E3
Continuity mistake: During the scene where Naruto and Sasuke accidentally kiss, Naruto's whiskers are gone.
Forever Red - S1-E34
Plot hole: Tommy states that he and the other Zeo Rangers destroyed the Machine Empire's leaders and ultimately destroyed the Machine Empire except for the Generals who escaped. This is not true - Lord Zedd and Rita destroyed the Machine Empire leaders at the end of series 4, and the Space Rangers destroyed them again in Countdown to Destruction in series 6. The Zeo Rangers never destroyed the Machine Empire.
Suggested correction: How would Tommy know that? He didn't watch the show or know the ins and outs of what happened in space. This is what he believed based on his experiences on Earth. Everything you described is factually correct, but Tommy did not witness this. So, to his knowledge, he destroyed the Machine Empire.
The Monsters Are on Maple Street - S1-E32
Continuity mistake: During the disturbance, the crystal punch bowl shatters, spilling glass and punch all over the table. Subsequent shots show the punch bowl still intact with no punch spillage.