Their Darkness cocktail is to die for! And even at $12, I think it's totally worth it. It is, hands down, the best tasting cocktail I've ever had.
This is great place to sit down and spend a couple hours between whatever it is you do in Vegas. Their tables have the cool surfaces that let you watch Youtube videos all night, play pinball, spy and chat with other tables (bet the shy guys are all over that,) and among other things you can mix and order cocktails from the interactive surface.
Most bars in Vegas only offer video poker and TV, so this place is def top notch.