Tai Hang is one of my favourite neighborhoods in Hong Kong.  Nestled just outside of Causeway Bay the little area has a very friendly, community feel.  There is a great selection of yakitori restaurants throughout the streets of Tai Hang, one that I go to frequently is Go Ya.  The small venue serves up authentic Japanese yakitori in a quaint authentic setting.  I recommend their chicken liver, pork belly, and Japanese green pepper skewers.  They even have 50% off a selection of sakes Mon-Wed.  A must visit for yakitori lovers like myself.