Devices and platforms are multiplying like bunnies these days, and that's a challenge for your humble UI designer. We have to quickly get familiar with the subtleties and conventions of numerous platforms.
A good design gallery can be a life-saver. I just found this design gallery for Nokia, and it's incredibly helpful. The browser lets you page through the latest Nokia apps and offers visuals for several screen types in each app. I wish more platforms had something like this.