My husband often lets the kids play with his Blackberry (they like to type letters on the type-pad). A few weeks ago, when we arrived at my in-laws (after a three day drive from California to Texas), he asked our 2 1/2-year-old if he wanted to play with his Blackberry. Our son bounded across the room with a gleeful, "Yes! I need to check my e-mail!"
We all got quite a chuckle at how natural his response seemed. And no, he doesn't actually have e-mail!!!