I think D. Gray-Man is a pretty good show. The character are interesting and also have great designs. The plot is (to me) very interesting, i like the whole exorcists, destroy the all the demon/akuma,the Millennium Earl/Noahs, and my favorite part is the innocence, anti-akuma wepons thing they got going on (Allen's crown clown will probably look totally awesome, i also liked his huge metal claw/arm/wepon thing).
I also love the Noah clan (they're awesome).
I think the coolest characters are: Tyki Mikk (his "black side"), Allen W., " Jasdebii" (Jasdero and Debitto/David. Both Noahs),Road K., and Lenalee.
I give D. Gray-Man a 9.9 (or a 10 i guess. I don't really care which one it is, it's still extraspectacularisticly awesome;)