Recently read that TNG seasons, the TV show, will be begin being released on blue-ray early in 2012, beginning with a sampler collection on January 31st. I usually don't care about HD transfers because I have a crappy TV but this time I do because the difference is substantial! On the Random Tuesday website, photos from the DVD set are shown morphing into the same photo from the Blue Ray set. This morphing illustrates some outstanding differences between the two sets. Scenes with characters appear substantially sharper and the film grains from the original production are smoothed out and the lines now appear crisp. Changes in focus are also made, providing greater depth to each scene as well. The most noticeable differences are probably those that involve special effects. These scenes are principally those that feature the Enterprise, where the ship is depicted with considerable more detail. In one particular screen shot, the Enterprise is shown in front of a Klingon Bird of Prey. The Enterprise again is shown with a much higher level of clarity and detail and the Bird of Prey is replaced completely with a CGI version of the ship.
Overall, the changes look fantastic and is what a lot of fanboys had originally hoped would happen with the Star Wars films -update the film quality and special effects but leave the damn story line alone! Again, here is the link to the website that features the comparison /morphing screen shots.