Is there a canonical list of Minecraft bugs?

Is there a good official/semi-offical list of Minecraft bugs somewhere. I occasionally experience weird behaviors and I want to know if the bug is already known, and I should just accept it since I am playing something in alpha, or if it is a new bug and needs to be reported so it can be fixed/addressed.

Mojang Bug Tracker

This is the proper, official bug tracker, with tickets for bugs, merging, fix-versions, the works. You can submit bugs here straight to Mojang.

[Edit] The new official list of bugs can be found here (old list is here). Anyone can submit a bug or suggestion, but search first to make sure it hasn't already been submitted.