I thought it was a great film too, I just thought the ending would of been more realistic and not from Tom Cruise, I dont want to ruin it for the ppl who havent seen it so I cant say too much here, I havent read the book yet but I'm definatly going to so I dont actually know how the book ends but I've been told that it doesnt end at all and the aliens just take over completely and thats it but im definatly going to read it!