Gotta say phone and text is certainly up there.
My phone is technically a smartphone, but from before touch screen interfaces came in. I can watch TV on it, download apps etc., but it's not really worthwhile with the interface/screen and I'm not bothered to get a newer one.
At this point my DSi in combination with my Huawei E585 serve for any mobile internet browsing I wish to do, and hopefully the 3DS will do it better, meaning I don't need to buy an expensive smartphone and/or a particular contract/data plan for mobile internet.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.







