Gosh, do a search on YouTube for "laser engraver" or "laser engraving" and you'll find TONS of videos. Epilog, Universal, LaserPro - some are from regular Joes like us just having fun, but some of the manufacturers are putting up video demos as well. It's become a heck of a "free" marketing tool! :-)
I was not searching for anything on youtube. In fact, I don't even remember what it was I was searching for. It must have had laser in the search terms though.