I periodically go through my WoW screenshot folder, rename all the screenshots and store them in folders so I can find them again if I need them.
After sorting through 10 or so of the Algalon fight I did couple of weeks ago, I've realized something - I have nowhere near as many screenshots of the new content than pre-Cataclysm content.
I mean, I know Algalon is quite a visually exciting fight; there's a very pretty celestial theme going on. However, I've hardly taken any screenshots of Cataclysm raids at all - probably a couple in Throne of the Four Winds, but that's about it.
I'm not sure if it's because the raid zones just aren't visually interesting, or because I'm not interested in general... but either way, I hope something stands out in raids soon, otherwise I'm not going to have any good screenshots from the first Cataclysm raid zones at all!