HTC MHL adapter.

My Samsung one is crap. Picture blacks out, no sound...just awful.

Sent from my Galaxy Nexus using Android Central Forums
 
The HTC MHL adapter works great. I had the HTC one from when I had the EVO 3D so I didn't need to buy a new one when I switched to the Galaxy Nexus.
 
I recommend you a TT-AC01 MHL-Adapter from Taotronics. I bought this one weeks ago. Works well. I can see the videos in my HDTV from my HTC Evo 3D with my friend. So convenient.