3D cube navigation

One other unique thing that Samsung has added is a 3D cube navigation menu. By pressing the dedicated key below the screen, it'll bring up this cube where you can launch a bunch of multimedia apps, including the Amazon MP3 Store, dedicated YouTube app, photos, videos, music, and the Web browser. You can even shake the phone to move the cube.

Unfortunately, you can't customize this cube with the programs you want; it's something that's programmed by T-Mobile. While certainly cool, it feels more gimmicky than useful but it'll certainly grab the attention of onlookers.