Tin-tin is a regular stop for me. This place should be one of two required visits for anyone planning a new lunch spot in uptown (Johnny Burito would be the other). They do it right.
1.) Vivian is the best cashier in the city. She flies through orders, and she does so in a very friendly fashion. As has been previously discussed, think of the friendly soup nazi with a "Hello Kitty" ceramic...
2.) They keep a fairly limited menu. Which is a good idea. Not to mention, it's hibachi. You shouldn't have that many options. :-) You don't want to be bad at many things, you want to stay good at just a few.
3.) They get you out the door and back to your office pretty quickly. Or into a very nice upstairs dining area with 2 TVs in easy to see spots.
So, if you're looking for something fast that's not the standard franchise fair uptown, I highly recommend a visit here.