One of the best all time still was the final explosion for Majin Vegeta.... my hair raises every time I watch it on YouTube.

I don't know if you ever watched TeamFourStar on YouTube, be they do / did classic dragon ball z paradises, they were hilarious! Almost at times better than the original! They did up to the Cell Games before they are calling it quits, and Cell is amazing in it. Not to shamelessly promote a random channel.

But I think on the topic of best DBZ villain Cell had it hands down!