Quite a few of those are must watches, only one I wouldn't say is a must watch, would be Gurren Lagann.

It's not just popular in the west, they just became popular in the west. Black Lagoon is insanely action packed without censorship, FMA is just an amazing story with excellent action scenes. Gurren Lagann is just throw logic out and create some badass action.

I'm in the middle of Durarara and it's just amazing to see how everything is playing out. I've been on episode 12 for awhile, been distracted by other anime.

The others, have been on my to watch list forever and I'm not sure when I gonna get to them.