I think they are worth watching. They're mecha shows, like Code Geass.
There are more, but I only listed those off the top of my head. If you do watch them make sure to go in order of 0079/Zeta/ZZ/CCA, or go with 00 first. 00 was aired during the same time as Code Geass, so their "graphics" are on the same tier.
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Sir Isaac Newton is the deadliest son of a ***** in space.