[ZevGun]

I haven't watched much anime, outside of some stuff i've watched on Adult Swim (FLCL, NGE, and Paranoia Agent)

I was wondering if anyone would name a couple really good series that any anime fan should watch (if there even is such a thing)
i'm open minded, so don't feel that you have to name something that matches the style from the little i've seen, nor would i be opposed to a lot of filler, as long as it's entertaining.