Dear 100 Hour Board,
I enjoyed the amusing answers to Board Question Board Question #23150. I'd like to give a slightly more serious response - but just for the fun of it.
A highly polished shield would help in your defense from a blast from a laser gun. Metal can be highly reflective - in the neighbor of 95 to 99% of the incident energy. It takes an enormous amount of energy to melt or vaporize metal at a distance with an unfocused beam. So, unless the laser gun has one or two orders of magnitude more power than is necessary to blast through metal, your shield should be effective in deflecting the laser beam.
In regard to the part of the question dealing with the Star Wars Blaster rifle, the question looked harder at first, but I believe is actually easier. Harder because - what exactly does a Star Wars Blaster rifle shoot? It can't be a pulse of light, because among other things it travels much too slowly to be light. Remember that blaster shot ricocheting around the inside of the giant trash compactor in the first movie (Episode IV)? Traveling at the speed of light a pulse would go something like 10 million meters in a single frame of the camera (assuming 30 frames per second. Further if filmed at 20 frames per second).
But, obviously, all you need to do is to have a shield made like the inside of the trash compactor. And if Star Wars were consistent... your shield would deflect blaster bolts as well.
A better defense against laser beams (and perhaps blaster bolts) would be to cover yourself with cube-corner retro reflectors. That way no matter what direction the blast comes from, almost all of it is returned to sender, wiping out the shooter. Don't ask me why they were too stupid to think of it.
As an interesting side note, according to ancient unreliable history, it is said that Archimedes used mirrors to defend the city of Syracuse from an attack by a Roman fleet. He was able to concentrate the sunlight and set fire to each ship, one at a time. Some say that the mirrors were actually highly polished shields held by soldiers. Mythbusters has attempted to disprove the history as myth, and some attempts have been made to confirm the history, but I have my own theories. Archimedes was a genius.