Although I don't consider him irreplaceable, I do like the idea of Jackson as Fury, based on the Marvel "Ultimates" version of the character. Some people are up in arms that Fury isn't being portrayed as the classic version of the character going back 40 years, but to me he's a supporting character in the films so it doesn't bother me.
Anyway, I guess that he and Marvel must have come to a very nice agreement indeed, because Sam Jackson has signed a NINE picture deal with Marvel Studios!
According to The Hollywood Reporter the films include Iron Man 2, Thor, Captain America, The Avengers and any sequels related to these films. There is also the possibility of a spin-off S.H.I.E.L.D. movie as well.
There's no word on amount (not that it's really any of our business) nor the exact movie titles, but nine movies indicates big plans by Marvel as far as both number of films and plans to run a common thread through all of them.
To me this is the first positive news about Iron Man 2 that I've heard in a while.