Yeah, I've looked at Minecraft. What's the point of the game though?
It is open word and very open to mods and added content. I've even seen a video on AOTS of someone who made an entire Predator mod
for it. There has also been games where people have made huge structures such as ships from Star Trek, Firefly, Star Wars, ect. Just search for "Minecraft" on YouTube and you will get tons of results.
The beta 1.3 added some new features that would not be in most video's yet such as the bed that lets you skip the night and a new save format that does not restrict you to 5 saves anymore.
As for the point of the game it can change depending on the game mode. In basic survivor single player you just need to survive and collect resources. I have heard of possible coming modes like one where the map slowly starts to fill up with lava and you have to build a boat to survive to the end when it is nothing but an ocean of lava.