These have to be the most bad ass batteries I've ever used, and I get them so cheap from Woot!
We use them in our LED lights for our convention shelves, and they last forever. I use them in my Rock Band 3 bass and can go months (no joke) without swapping them (and I play a lot of RB3!!). I've yet to swap the batteries in the mouse that came with my MacBook Pro for work.
I haven't tries these in a camera or anything, but my camera has it's own rechargeable, so...
For "everyday" AA and AAA batteries, though, these are the best I've come across.