Minecraft.net and it's associated minecraft servers (a.k.a. all of them) are down, as well as most users' home minecraft client. Personally, this is the second time in a very short while that my minecraft has gone down(the second time this week!), but that's only because I mostly only play the single player mode. The multiplayer mode (a.k.a. servers) has gone down several times in the past, but only for short amounts of time.
However, ever since Notch took a vacation, Minecraft and Mojang has basically been falling apart. The website has gone down several times, and when the website is down then all client side servers are down, and some sort of faulty download has been crashing home clients. I'm not one to judge too harshly, but if Mojang can't operate without Notch, then it isn't a real company or studio.
Anyway, here's another funny video from the wonderful world of Minecraft. I've gotten my minecraft up and working again, so expect another tutorial in the near future.