For those haven't watched, "I am Legend" is starred by Will Smith, I not going tell you the whole story, here is the Wiki link for you if you link to find out more. But the main reason i want to blog this is that, there is an alternative ending if you purchase or rent the DVD.
Personally I find this ending is more interesting and suit the story better, but another part of this prefer the original theatre version, which openly proclaim to the mass that they is a God!!! Amen!!! :)