I liked Yu-Gi-Oh GX. It wasn't as good as the original anime no but it had some sweet duels.
Dragon Ball GT is garbage and most agree there. However I really enjoyed one of the most unpopular characters quite a bit. Pan was adorable and it's a crime she never went Super Saiyan.
Sasuke was a good character pre-timeskip. In fact he should have been the hero and not Naruto. He was the only member of Team 7 who could legitimately fight for God's sake. Well, not counting Kakashi, obviously.
And speaking of Hellsing, Alucard is easily the worst part of it. He's so ludicrously overpowered and cheap that you can't help but root for the villains instead. Go Millennium! Go The Captain! Go sexy catboy! I believe in you.