Just knew about Pidgeon Impossible project today, by reading BlenderNation.
I must say I'm really impressed. Not only by the quality of what has been produced until now, but also by the altruistic initiative of the creator Lucas Martell.
He has been producing a weekly podcast about the making of this short movie. Besides being pretty funny, they also bring very valuable information for the ones who want to make an animated short: from how to work efficiently with lights and render passes to best ways of creating convincing eyes and correcting artifacts by using camera projected textures (in Blender, it is the UVProject modifier).
In my humble opinion, this is a goldmine: this guy is producing his short for about 4 years (FOUR YEARS, MAN!!!) and has been learning a lot from his mistakes. Fortunately he is not afraid of sharing what he discovered and learned with his podcasts.
Instead of taking another 4 years making a personal project to learn all those things you can just go to his page and watch the podcasts. =)
He is using XSI as his 3D app, and I must say I liked a lot some things I could see about this app. The interface seems to be very fluid and comfortable to work with, and it doesn't seem too far from what I'm used to see in Blender. There are also some very cool things, like the ability to record your action and save them as a script (which I know is being planned for the upcoming Blender 2.5).
The 8 ones that are on the site by the time of writing this are already on my hard drive. =)