Has anyone ever done a crossover between Yamato/Star Blazers and either 
Star Trek or Star Wars?

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Andrew Dynon, champion of all things Iczer and Mekton Z

CAESAR: Brutus, why does this man follow such a profession?
BRUTUS: For money, Caesar. He tells me he wants to die rich.
CAESAR: And so he shall. Give him this sack of gold and then strangle him.
   - The Goon Show: The Histories of Pliny the Elder