Dragonball Z - Gohon Is Vegta
In the preview for the episode called 'The Cell Games' they say 'Cell shows Trunks why he has nothing to fear, and Trunks powers down and dose something shocking. Meanwhile Vegta has a rude awaking. While Goku and Vegta have some tricks of there own' This isn't of of it but thats what they say about the chacters, but I believe they accidently refered to Gohon as Vegta.
The episode before the one called 'The Cell Games'