Although they're using every engine and map exploit known to man to finish the game in that time, so it doesn't quite count.
As for the issue with DVDs: Over the years, I've seen companies adding more content and, thus, more value to the DVDs they release. As the technologies become less expensive, they're able to find ways to fit more onto a single disk, as well as include more disks in a box. Deleted scenes, director's and cast's commentary, interviews with the cast, and the ease of multiple language control on one disk as opposed to having to find the right VHS, among many many other things, coupled with the price drop of DVD players and DVDs themselves makes for a solid purchase.
Video games, on the other had, although have been improving as well, most releases within the past few years have only improved graphics-wise. Companies realize that people want shiny eye candy, so they load games with all the shiny eye candy that they can at the sacrifice of the game play time and replayability. Also, they forego any consideration about the average customer's PC specs, requiring some expensive upgrades, and then there are times where companies go out of their way to support one company's upgrade over another, blatantly advertising that one item will not work as well with their game as the other.
Games don't have to be extremely detailed, bank-breaking interactive eye candy to be entertaining. I picked up a copy of Final Fantasy Tactics Advance, for example, and that lasted me a solid 90 hours before I beat the game and got all of the 'secret' party members. Grand Theft Auto 3 and GTA:Vice City are also great games because the focus is on the gameplay and not the graphics; Even after beating every main mission, there are all sorts of side missions to do, secret goals to be reached (collecting specific cars and taking them to the garage and gathering all 100 packages for example) that increase the replay value.
In the end, I would much rather have a game with good replay value than some interactive eye candy.