Trivia: This film, along with 2000's "X-Men" and 2002's "Spider-Man," are often cited as the three movies that helped revive the comic-book-movie genre after several poorly-received 90's movies like "Batman and Robin" and "Steel" had effectively killed it for a few years.
Trivia: Blade's tattoos were designed by director Stephen Norrington.
Trivia: Blade's somewhat infamous one-liner "Some mother****ers are always trying to ice-skate uphill" was something that star Wesley Snipes once casually said in conversation while trying to describe the character of Deacon Frost. Director Stephen Norrington and writer David S. Goyer thought it was such a bizarrely unique expression, they vowed to work it into the script somehow.
Trivia: Donal Logue, who plays Quinn, fell and dislocated his jaw during the filming of the hospital scene, where his severely-burned character attacks Karen. He had to be rushed to a real hospital while still in full burn makeup, which caused a panic among the staff, as they thought he had really been severely burned over his entire body.
Trivia: At Deacon's place, the vampires are watching Mortal Kombat, also made by New Line Cinema.
Trivia: The character of Whistler was created by writer David S. Goyer for this film, but first debuted in the Spider-Man animated series TV show.
Trivia: Whistler was named Abraham as reference to Abraham Van Helsing, the vampire slayer in Dracula's novel.
Trivia: Mark Wahlberg, Skeet Ulrich and Bruce Payne were considered for the role of Deacon Frost.
Trivia: Jet Li rejected the role of Deacon Frost because he was involved in Lethal Weapon 4.
Trivia: Denzel Washington and Laurence Fishburne were considered for the main role.
Answer: I don't think it's so much a memory as it is Blade just equating Karen with his mother in that moment. The only way to convey his thought process to the audience, though, is to show his mother onscreen.
Phaneron