Also Vegeta and Nappas adventures on the way towards Earth. I always loved that episode growing up, and it works as a nice little one shot story. They arrive on a planet, get captured, and brought before the evil king.
Vegeta and Nappa end up defeating the king, his beast and his minions. They save an enslaved people and free a princess. It's just like Gladiator or Ben Hur!
Except then they murder everybody.