I don't have a particular one, but I did enjoy watching Patlabor, Ninja Scroll, Samurai 7, Samurai Champloo and of course the very first anime movie I've watched Nausicaä of the Valley of the Wind.
I'm on the fence with this topic. As much as I do love my Japanese cartoons, alot of the North American brands have produced some quality animation aswell. But then that's my opinion I guess.
Currently watching House, Two and a Half Men, V, The Vampire Diaries. If US cartoons count, I'm watching G.I. Joe Renagades, Transformers: Prime and Young Justice.
I'm with Koby on this one. If Lion-O is a lion, were's the big hair? Well at least they have Larry Kenney (original voice actor) playing the part of Lion-O.
Wait... There making a movie out of this anime? Add that to my list and Transformers: Dark Side Of The Moon, Robotech, Green Lantern, Thor, Captain America, The Avengers and if they ever do it Thundercats.