Hmmm... off the top of my head, for the most it will be at the very least where subbed/dubbed are up to unless mentioned
Airgear
Black Blood Brothers
Black Cat
Busou Renkin
Buzzer Beater
DB/Z/GT
Cowboy Bebop + Movie
Eyeshield 21
Hellsing
Histories Strongest Disciple Kenichi
Hunter X Hunter
Kekkaishi
Lovely Complex
Naruto
Reborn!
Yu Gi Oh
Yu Gi Oh GX
Zoids New Century
Zoids Fuzors
Hrmm... as for favourites, I would probably have to say Hunter X Hunter. It's my favourite manga and the anime does it pretty well. Some people don't like the Greed Island arc (Which was the last arc animated, as the next arc has not finished/on hiatus) but it's personally my favourite arc.
At the moment, I'm watching Kekkaishi, Eyesheild 21, Kenichi, Lovely Complex, Naruto and Kattekyo Hitman Reborn! whenever they come out.
I'm more into the manga though, generally more available and faster to download.