I was first introduced to the graveyard specials about six years ago. They have ox tail soup for $9.99 and NY steak for $4.99 (I think..). I never even tried ox tail before in my entire life, but their soup is sooo good!!
The thing is they are only selling these items during their graveyard special, which is form 11 PM to 9 AM. Right before 11 PM hits, there will be a long line of people waiting to be seated for the specials. The hostess usually is not the nicest, but our interaction is only about 10% of the time we are there.
I'm pretty sure they up the price since six years ago, but the quality and the quantity of the ox tail soup is the same. The broth is so rich and it's perfectly paired with mushroom, celery and carrots. I can't really finish the whole portion, so you can definitely share - just get an extra rice. Ask for hot paste too and dump it in the soup, with the ginger juice.
Definitely one of the things I have to do when I'm in Vegas.