I have run across the claw puzzle at least 4 times so far. One time the claw was literally sitting directly in front of the puzzle. I am level 30 and have only run into one dungeon puzzle that did not involve the claw. It actually involved rotating bollards and was very similar to the claw puzzle (but different).

I was kind of thinking that since the claw puzzle was revealed prior to release it would just be the tip of the ice berg. Has anyone run into a variety of puzzles that maybe I've just missed?