I found this site that has an interesting list of memorable laser moments in Hollywood: http://www.vueweekly.com/articles/default.aspx?i=2064
I'm just wondering what that white laser was in Manhattan Project. I mean IRL, was it an argon/krypton?
Also, I don't remember the movie, but they used a laser from a plane to pop popcorn and fill the guy's home with it. I don't think it was Weird Science, but something else. That was a neat laser.
From what I remember, the one in Congo was nice too.