These days, you can't shake a stick without bouncing brown beams around the room. Raytracing has been a hot high-end graphics trend for a few years, with new games boasting support for the complex lighting simulators and old games being retrofitted with shine. This year, a new Half-Life mod will add raytracing support to Valve's seminal shooter, and even as someone usually perfectly happy with old games looking old, I think it doesn't look half-bad. See for yourself in the new video, below.
