So here are some pics, taken from my DSi ( because I'm poor and a bastard and cannot afford a real camera ). 
Compared to the PS3 Netflix, it is a tiny bit different. I don't want to say that its slightly better, because they are the same thing, but I do want to say that it is easier to go browse around compared to the 360 and PS3 Netflix. 
 
Also, the controller has little functions. Control Pad does navigation, 1 button plays, B button goes back...and so on.