OVA Vol 3 scene tip of the hat to Bela Lugosi?
In HELLSING ULTIMATE VOL 3 There is a scene where Alucard hypnotizes the bellhop so that he can take his coffin to the penthouse for the stakeout. The hand gestures used are identical to that of Bela Lugosi as Dracula when he is trying to do the same thing to Lou Costello in Universal's Abbott & Costello Meet Frankenstein.