Let's talk about camo and woodswear.

In this thread we should address:

Types of camo
Effectiveness of different camos in different regions and overall effectiveness
Availability and how common different camo patterns are (easy to find at a surplus store, or are you going to have to order online? Is it expensive?)
Favorite camos
Least favorite camos

Bonus points for anyone who posts up pics of their personal camo set.