There's a whole bunch of stuff I love already on the list, honestly ([i]aaaand[/i] one which I utterly despise but I'd show great pleasure in messing around with it anyways so it's all cool XD), which makes it difficult to suggest other series but... Hmmm...

Maybe some super robot stuff like Mazinger Z, GaoGaiGar, Gurren Lagann... Or just Super Robot Wars in general to mash them all up. XD Also, Kamen Rider!  I mean I'm not entirely sure how many people here actually watch that but I love me some Kamen Rider so yeah. ^^;