I bought one a few weeks ago used and am now selling it - pretty disappointed. I wanted a super capable PDA and I got an iPod touch with a bigger screen.
Fantastic for displaying and browsing photos but for just about everything else I far prefer my 13" macbook pro - including for web browsing, email...
Just not worth the $ IMHO. Looking at the differences between the original ipod touch and the current ones, I'm prepared to give gen 2 or 3 another shot but I was really disappointed in some of the functionality - for instance, I love the Evernote program but on the iPad it wasn't any better than on an iPod touch - still wasn't able to edit notes like on a laptop.
The Calendar was useless, while on my MBP and my Android phone it's fully enabled. Apple handicaps it on purpose to get you to pay extra for Mobileme.
I also frequently had apps crash, including Safari, which was annoying.
I was really MUCH more impressed with the iPod touch and would probably like an iPhone as well but AT&T is a no-go in my area.
I know squat about PP. Old: Canon 10-22, 18-55, 24L, 50 1.4, 50L, 85 1.8, 24-105L, 70-200 2.8L nonIS, Sigma 30 1.4, Tamron 18-200 lenses. t2i, 7D, Xsi bodies. New: D700, 14-24, 50G, 105 VR Macro, 70-300 VR, SB700