Looking forward to the updates that will come out this summer.
Painterly update is out, incase you missed it. Just lettin' ya know.
Edit: wow, Notch is terrible at bug-fixing.
Looking at the wiki, there are like 3 new bugs made for each attempt to fix a previous bug. For example...
Problem: When crouching and leaving a world, if you load that world the player will be stuck in the ground.
"Solution:" The player is moved up a bit if crouching when quitting a world.
New Problem: If there's a block above the player when this happens, the player will take damage.
Problem: Boats travel at high speeds through waterfalls
"Solution:" Boats don't float as fast
New Problem: If a boat sinks, it won't bounce back up.
There are like 10 of these...