As it happens, only last night were we lased by a green one!
(see date/time stamp)
click on pic to see video
Initially, as semirigid rotor said above "It refracted around the cockpit, thousands of tiny green lines everywhere. More than just a distraction."
Then he seemed to concentrate on the body of the aircraft as you can see.
Now....what mr laser didn't want to do was to get into his car, drive suspiciously, have us PNC the reg no, only to find out he wasn't insured!!
Now, as a twist to this thread, how about in these days, that laser beam is attached to one of these!!
http://en.wikipedia.org/wiki/RBS-70
RBS 70 is a short-range man-portable (MANPADS), laser-guided missile system...
...If the operator is confident that he has a good track he fires. The missile then flies in the beam of the laser from the sight, adjusting its position constantly to stay within the beam. This puts a lot of pressure on the operator who needs to have a very steady aim. If the missile is guided to within 30 meters of the target a kill is 95% assured.