Nokia's "Tube"
I think this may be the iPhone killer, and I think this for the following reasons:
1) Apple have crippled the iPhone's hardware and software, for example no MMS, video capture, useless Bluetooth etc.
2) Nokia is a very popular phone manufacturer, and this phone, like many Nokia smartphones, uses the Symbian OS which has many apps, is very supported and is very popular
3) They are more open, you can just get apps off the net and send them to your phone and thats it! No App Store (in which the apps are VERY limited) or hacking crap, pkus all your media dosent have to come form iTunes
4) Most of their phones are not exclusive to a single network/carrier, you can just get them on whatever network you want, or even get them SIM free
5) Nokia uses new technology when it comes out, tke the N95 for example, it has a 5 megapixel camera, video capture, GPS, Bluetooth that acctually does something, MMS, 3.5G etc. where as the iPhone uses very little very modern technology
Now, dont get me wrong, I think the iPhone is great, and we will have to see what they put in their new one thats coming soon, but there are good reasons why I have heald on to my Nokia 6230 instead of buying a iPhone, and will probably be getting a Android phone or one of these, which are listed above.