I'll add to the spoiler text discussion.
Spoiler Below
A Captain America movie is currently in the works (IMDb says 2009, but you never know).
The Hulk movie will feature the second "push" toward an eventual Avengers film (someone cameos).
BTW, according to Wikipedia, semi-confirmed heroes for this Avengers film would be Captain America, Iron Man, Hulk, and Thor. One problem with having many Marvel heroes in one film is that different studios have film rights to different characters (i.e. Kingpin can never be a villain in a Spider-Man film). However, now Marvel has their own studios and they have the film rights to the above characters, so that makes an Avengers movie possible.
Finally, why complain about a black Nick Fury when Kingpin was already redone as a black man (and probably the best thing about the Daredevil film).
Anyhoo, I'll just
link to my actual thoughts on the film.