As the kids say these days, the this, but that's just a blurry trailer at 720p :)
Trailer looks good, I'm not sure about Johnny Depp, but after his last few performances, I'm sure he'll be awesome. Mia Wasikowska (say that 10 times fast), who I've never seen in anything, looks great as Alice, and the rest of the environment and it's 3D computer generated goodness looks good, as expected, as well.