I know lists like these all break down to personal opinions, and as such, someone will always have some nitpick of their own, but I am a little surprised that Dragon Ball Z didn't get a mention on the list. Regardless of whether one was a fan of the show or not, there's no denying that DBZ is one of the things that made Toonami the hit block that it was, and it introduced a lot of American viewers to action anime. Not a complaint, merely an observation.
Kudos for mentioning Outlaw Star, though. I've always felt that the series was underrated, but well done. And while I liked the show, I was really surprised to see Justice League make #1. That was a nice surprise. I'm sure I'm in the minority with this, but I actually preferred Justice League before it went Unlimited.