An interesting little film and nothing like it's two horrible sequels...some great ideas get a half assed airing and it has some truly memorable scenes...the bit with the kid's toys coming to life and the birth of *the creature* stick in the memory...IIRC said creature was an actor walking bent over backwards like that spider walk scene in THE EXORCIST.
I think the Sci-Fi channel UK plays it quite a bit with an alternative, more satisfying ending...
As the tag line on the poster went...
"Not all Extra Terrestrials ARE friendly!"