
Skyline - Official Trailer
video by GO!ROGUE
It reminds me of Independence Day (1996). I even remember the alien "computer system" in the film could be hacked by a MAC!

If aliens invade, there is at least one thing we could do!

Play Space Invaders. (flash game)
Source: www.finestfreeonlinegames.com
References:
Space Invaders
Independence Day (film)
PS: Won't see that! "Diary 11/29/2010"