First of all, I must confess that I am a Si-Fi nut. I've seen lots of Si-Fi movies and The Andromeda Strain is definately in my top five. The plot is very interesting in that it deals with a microscopic organism from outer space that is brought back to Earth by a satellite. The cast is outstanding, especially Arthur Hill who plays the leader of the research team. One of the great things about the movie is that it moves right along. So many movies seem to lag, especially at the beginning as the characters are being introduced. However, in this movie, even the beginning is exciting. I've watched this movie over and over, and never seem to get tired of it. It's just plain fun.