These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Badass Decay: Dracula. To be fair, it's hard to retool a villain that's been beaten into the ground so many times.
Big Lipped Alligator Moment: The scene with the gravedigger after Velkan reappears. After a quick chat with Van Helsing, he goes to hit him over the head with a shovel - and is then quickly killed by the werewolf. Rather a lot of time and attention is devoted to such an insignificant character, who literally contributes nothing to the plot.
Critical Dissonance: Critics ripped this movie to shreds, but it was one of the biggest blockbusters of '04.
Ensemble Darkhorse: The Brides. In any other story they'd just be nameless background characters that'd be killed off quickly. Here they're actually deadly minions with distinctive personalities and backstories, and give the heroes a run for their money. More often then not, they're what people remember most about the movie. Aleera is the Ensemble Darkhorse of the Brides herself.
Dracula shows interest in making Anna his bride, and a lot of his dialog with Van Helsing is pretty friendly considering Van Helsing is the one who originally killed him.
Dracula's bride Aleera also seems very interested in Anna, calling her "my love" and making claims like "I know what lurks in your lusting heart."
Ho Yay: Between Dracula and Van Helsing. Dracula seems a hell of a lot more interested in seducing Van Helsing than killing him. Especially when he calls him by his first name and drops hints about how close they used to be. It is also made worse by the videogame and the original script (turns out, they actually toned down on the Ho Yay...)
Narm: Velkan gives a spectacularly amusing "NEVAAAAAAAAAAAAAAARRRRRRRRRRRRRRRRRRR!" when yelling at Dracula. Dracula's response is...to start dancing with an invisible partner. Huh.
Dracula's reaction to Marishka's death - "MARIIIIIISHKAAAAAAAAA!" - and then marching up the wall to shout at his two remaining brides on the ceiling, all while Chewing the Scenery like it's Frankenstein's neck. Plus their hair and clothes are still obeying the laws of gravity and hanging down - or up, depending on the shot - making them all look ridiculous.
What an Idiot: All Dracula has to do to win is FLY AWAY from the last fight (he had plenty of chances to do that). Van Helsing will soon lose his individuality, Dracula will have a legion of his children to support him, game over. To add more insult when Van Helsing turns back to human form briefly Dracula just stands there talking until Van Helsing gets back his werewolf form and kills him.
To be fair, he does try to fly away two times near the start of the fight. He gets smashed into the floor and has one of his wings mangled by Van Helsing for his troubles.