I saw the movie a few days ago and I just finished reading the book this morning. Although I liked the movie overall, and it hit some of the emotional points of the book, the book did those things and more so much better. Aside from those few marks though, they could have changed Will Smith's character's name to anything but Robert Neville and it would have bore little resemblance to the book.
I can see now why the script for the old movie (The Omega Man, I guess...I haven't seen it) got top billing as source material. It probably has more to do with that flick than the novel.
Smith was great, I thought. But man...movie Robert Neville lived fairly lavishly compared to his book counterpart. Smith was practically in a mansion. And Smith did his little research thing, but I liked how it was handled in the book. Plus the book didn't shy away from actual vampires, even going so far as to give the monsters a non-supernatural explanation.
Post-plague New York was gorgeous. The "dark seekers".....it's been said already....they didn't need to be CGI. I don't mind big, stretchy jaws, but they could have augmented real actors instead. They could have at least gotten real actors for the hero monsters.
I hope that in another 10 or 20 years, someone will come along to actually do a close-to-the-book adaptation. Then maybe it can be called I Am Legend and actually make sense.
I've got both The Last Man On Earth and The Omega Man here to watch. I'm looking forward to it..