Man, King Kai's voice is so unfitting it's funny. His movements completely do not match with his slow and relaxed voice. Swell. This is the only complaint I have from Japanese Dub, I like all the other ones.
Goku training and lifting those huge weights is nice to see. The Saiyans' never ending warrior spirit is nice to see. LOL at the moment when Goku noticed something wasn't right and it was just Bulma's birthday party. Interesed to see again the encounter of Bills and SSJ3 Goku, and that one-finger push-away.
And never knew Bills sealed the old kai in the Z Sword.