I'm lucky: One of my grandfather is a self taught, tech savvy person. So, he owns a MacBook Pro, an Android Phone (He's going to wait July to consider the next upgrade).
My other grandparents are just a bit older and are not confortable at all with this kind of technology. They are simultaneously at the generational limit where the technology was just not there or was too cutting edge when they would have been interested, and at the technology limit where it's still not simple and ubiquitous enough for them to jump in the bandwagon now.
In one hand, I can email, skype and share photos instantaneously despite the 9000 kms separation... And on the other I'm stuck with handwritten mails (And the guilty feeling for not to writing often enough). I do not count phone calls: They do not hear so well anymore, so when it's not short, it's comical :)
I so wish iPad 4 was already here. All they would need is a 3G internet connection, one screen with two apps button (mail and video calls).