Well... it was pretty good, compared to somethings... a historical representation on anything it was not.
If you have ever read anything about van helsing, dracula, Mr. Hyde, viktor frankenstien, igor, or physics, and expect this movie to follow the subtle rules they laid, forget about it. The movie was good on its own, but it was far more funny than they ever made it out to be.
They actually established a really interesting background for Van Helsing, but failed to follow thru at the end, which was a bit of a dissapointment, and you think if they just took out a couple more jokes, they coulda wrapped his character up a bit more (time wasn't really a restraint on that in this 2 hour 20 minute movie.
Another thing it lacked, other than a great end to the the end fight, was believable brides. They were really just whiny bitches with bad accents and horrible costumes... they were cheesy to say the least.
But to make up for them were the werewolfs... and they were nice. Really nice.
So, in short, this is a good movie, but not a great one. Great for just watching an hanging out... but don't miss anything important to see it. A definate rent if you miss this in theaters.