I've watched the 3 so-far released OVA episodes of Hellsing Ultimate, and so far I have to say I am thoroughly impressed.
This is one awesome series, Alucard continues to be one of my favorite characters of late, and I love how the show incorporates all the mythos of Dracula into the character.
The show's animation is extremely good, and the violence and the gore is somewhat refreshing considering anime as a whole really only shows blood. You wouldn't think adding gore into the mix would make a difference, but it certainly does. I'm eagerly awaiting the rest of the OVAs.