I do hope you all realize that MOST movies do this, as it is rather difficult to be original anymore.
...a lot of movies will do an homage to older movies which had inspired the writer/director of the movie....
for instance, Underworld/Hellboy/etc came out AFTER Blade...so they had borrowed some elements of that movie...
if you go to
www.imdb.com and look up the movie in question, there is a "connections" link that will tell you a lot of the movie connections you are talking about.
Off-hand the one on my mind is the scene in the Matrix where they go into the building (the one they get caught in), and its the same building used in Bladerunner....