Super 8 or ET: Portrait of a Serial Killer

Elle Fanning and Joel Courtney in J.J. Abrams' Super 8

SPOILER ALERT! – MY WHOLE REVIEW IS ONE BIG SPOILER, SO READ WITH CAUTION!!!!! 
 
Oops…I think even my tongue-in-cheek title is a spoiler of sorts…sorry.  Yes, folks, we have an alien on the premises.