Krillin's teeth When Radditz areived on Earth during the Saiyan Saga he smacked Krillin in the face with his tail. In the scen that fallowed it Krillin was missing a tooth but in the verry next scene he had all of his teeth back. Wig. 

When did Movie 1 take place??? Yes I am referring to Return My Gohan/Dead Zone. It had to have taken place before the Sayaijin saga begins because Goku doesn’t doesn't use any of the attacks he learned from King Kai. But then again, Krillin is attempting to save Gohan, who is a young child and still has his tail and his hat with the dragon ball on it. But if this is true, how come Krillin is surprised that Goku has a son when he meets with Goku and the others right before Radditz arrives? Maybe it should have been named the Twilight Zone instead!

Master Roshi, disguised as Jackie Chun, blows up the moon during the Tenkaichi Budokai in Dragon Ball. How could it have come back for Piccolo to destroy when Gohan turns Oozaru for the first time?

Why does Gohan have a tail in movie 5. It takes place after the Frieza Saga and Gohan's tail doesn't grow back! Strange!

This just doesn’t make sense! During Dragon Ball Z’s Saiyajin Saga, Piccolo leaves Gohan in the wilderness and for the first time in his life, Gohan looks at a full moon. When Gohan looks at the moon, he transforms into his Oozaru form. Piccolo witnesses this and blows up the moon and Gohan returns to normal. The second time he transforms, this time the moon is being projected by Goku’s old space pod that he traveled to Earth in, Piccolo destroys the projector and Gohan again returns to normal. But during movie 3, Turles, forms a false moon and Gohan transforms. Turles then destroys the false moon and Gohan stays in his Oozaru form. Now why did he not return to normal has had happened the previous two times?

Now why couldn’t Goku survive in space? During the Saiyajin Saga when we first meet Vegeta and Nappa, they travel to planet Arlia when they kill the insect-like dictators of the planet. As they are leaving, Vegeta and Nappa go OUTSIDE of their space pods to blast the planet! So why is it that Vegeta and Nappa are full blooded Saiyajin like Goku can breathe in this case, but Goku has to have a ship in order to escape the exploding Namek during the Frieza saga?

Another incident in the Saiyajin Saga that does not fit is when Gohan transforms into his Oozaru form a second time. The transformation is caused by the projection of the moon from Goku’s old abandoned space pod. Piccolo finds it in the area where he is training Gohan, which is a barren area with few trees and a great distance from his house (Gohan’s trip home was pretty long, over water!) But, when Goku’s discovery by Grandpa Gohan is reflected back upon, the area is suppose to be near his home and is a forested jungle. Now how could Goku’s space pod have changed its location???

How the hell could Dr. Briefs convert Goku’s tiny little, blown up space pod (Piccolo took care of that) into the ship with the gravity room, kitchen and living quarters, that took him to Namek?

During the Trunks Special, The History of Trunks, in one scene, Trunks uses up most of his power and fall out of his Super Saiyajin form. Moments later, he has his yellow hair back and is suddenly a Super Saiyajin again.

During the Saiyajin Saga, Vegeta is going to use his Galick Gun to destroy the Earth. But in DBGT, Goku in Super Saiyajin 4, fires a Kamehameha at 20 times its strength at Super 17 and misses. Now why didn’t an attack that strong, delivered by a character with a power level well over Vegeta's during the Saiyajin saga, destroy the Earth instead of just leaving a crater?