Well all of the good animes have already been suggested.

I don't think I saw Death Note yet, so I suggest that.

Also, if you get any, get the subbed versions.

I hate the dubs for just about any anime. :shrug:

Darker Than Black

Trigun and Cowboy Bebop have amazing dubs.

Looked at what Netflix has for instant streaming, these are my suggestions:

Spice and Wolf

Full Metal Panic!

Eden of the East

Baccano!!

Nana

Honey and Clover

School Rumble

Pretty piss-poor selection they have for instant streaming (I'd never use Netflix Instant Streaming in it's current form anyway). If you want a decent selection of streaming anime, head over to the Anime thread and look at the OP, there's a bunch of sites that stream anime available listed on there.

I liked the subbed versions better.

That is just my preference I guess.