Hmm. I really need to watch more good anime, but I just never know where to look. Therefore, this thread will probably be helpful.
*snipped for preventing wall of text*
Okay, english dubbed anime- that shortens my list a lot:
Baccano
Durarara
Code Geass (second season is a bit debatable in quality but first was good)
Slayers
Planetes
In feature length stuff, look out for pretty much anything by studio ghibli.