I'm still in love/awe with the current crop of smartphones. I just returned from a driving trip during which I had my phone providing me with simultaneous: GPS turn-by-turn navigation, music through the car speakers, internet (for my passenger), while monitoring my emails (4 accounts), and receiving calls (2 lines - 1 forwarded).
I can't recall anything else this useful that evolved this fast.
But I still keep forgetting that it has a camera