Blade 1&2 are kinda great though
Blade, the movie series that established that when blood (which contains coagulants) meets anti-coagulants, it explodes. Apparently because in his universe, everyone who goes into heart surgery blows up on the table.
Blade 2, the movie that has vampires with hearts "encased in bone" - apparently because the concept of a "rib cage" is unknown in his universe.
Blade 2, the movie with vampires who have no lower jaw, "so they can bite harder", apparently because the concept of leverage is unknown in his universe.
That Blade 2 is great?
Hint to movie-makers. Don't try science-up your vampires. It makes you say stupid crap.