A problem with the ending
I enjoy this film immensely and it is my favorite of the Body Snatchers movies. However, when you know the back story about the ending - being rushed after production was (they thought) finished, so much so that the actors in those scenes were not even credited - it explains a little about why some of it is a little silly.
Most notable is the conduct of one of our old favorites, Whit Bissell. Upon learning of the truck full of mysterious giant seed pods, he tells the police to get on the radio and block all roads in and out of town. Really? Do police in California take operational orders from any MD? Next, he picks up the phone and says he wants to speak to the governor (just as Miles did from his home earlier). Does the guv take phone calls from any ol' doc at any hour of the day or night?
Don't get me wrong, I am a big fan of this movie, with or without the tacked-on ending. I was not at all offended. More like amused.