First off I'd like to mention I have created an Anime Community here on Hive if you're interested in sharing any of your future Anime Posts over there, It's still young so it's not to big right now, but I'd love to see it grow and encourage more anime content. THe Anime Realm can be found here: created/hive-158489

That said, most of these songs are from shows I don't really watch, though the OP's are all pretty good.

My own favorite is a classic, Tank! from Cowboy Bebop.

It's impossible to not like Tank, I am convinced of it.