I don't harbor a fanboy grudge with any company borrowing the iPhone's UI. Large buttons that are easy to press, a black background for colors that pop—these are good ideas for every touchscreen phone.
The LG Arena KM900, slated for a Europe release this March, is about as close as you can get to the iPhone without releasing a straight-up clone. Actually, scratch that. The KM900 is just as convincing as most iPhone clones out there. Even the icons, like those for music, calling, the calendar, calculator and settings are frighteningly close to Apple design.