The only other one he's made is the Castlevania 1 vs. 2 video, plus a small Castlevania 4 supplement. I'm a huge CV4 fan, but I have to admit, his take on it was right on.
As for his delivery, I dunno, I think it's entertaining. He comes across as passionate and high-energy, he's really good at using his voice, and the editing at least makes me pay close attention so I don't miss anything.