Heh. The title of Space Dandy's ending theme: "Welcome to Dimension X". The song's arranged by none other than Yoko Kanno herself. The singer's Etsuko Yakushimaru. She's performed for a handful of other themes before, most notably the ones for Mawaru Penguindrum and Arakawa Under the Bridge.
As for Space Galaga...I'd totally buy that in English.
I would suggest that it's not the medium, but the quality of perception and expression, that determines the significance of art. But what would a cartoonist know? -Bill Watterson