Me and a friend have set up a server, and while discovering it's lands, I found a couple of glitches.

1) Floating snow?!
I found this a couple of times, but I only made a screenshot of it now. It already has been seen a lot of times. There is even a screenshot in minecraft wiki's site!


2) Octopuses fly, cows don't
This was found by accident. I found it while I was building a castle, which I might upload as a project soon. It looked strange at first, so I took a screenshot of it. Expect to see ink falling on your head!

http://imageshack.us/photo/my-images/269/20110831194707.png/

3) Dissapearing clouds
I found this by accident too, when I was crashing some glass.
The thing with this glitch/bug is when you click glass (so it will almost be destroyed) clouds showing through it dissapear. You might not see the bug correctly in the image link, but there was actually a cloud there
http://imageshack.us/photo/my-images/825/20110831205758.png/

4) Sand says: Screw gravity!
This was found in one of my worlds, in a desert. I was exploring the map (look at my rank...) and found a lake, thought it will be useful. And I found something that outstands the minecraft physics, Flying sand!
http://imageshack.us/f/830/20110901135510.png/

5) F5 mode+water
I found this ages ago, and I thought I'll add it now The thing is, when you are in F5 mode, go into water, and make you camera up, you can see through water like in real world!
http://imageshack.us/f/198/20110901135626.png/

6) Wolf in a desert?
This was found just after the Number 4 glitch. I know there is a forest nearby, but it would stay in it, would it?
http://imageshack.us/f/594/20110901135537.png/

I'll try to find more! Post any glitches you found in the comments!