I have been going to Osaka Teppanyaki ever since they opened back in 20th Century. The entrees are fairly large, even by North American standard, so go hungry.
All entrees come with a simply yet delightful miso soup and even simpler salad with delicious Japanese dressings. These are small traditional teppanyaki appetizers.
The best entree here is without any doubt the seafood combination. Fresh seafood done to perfection right in front of your eyes. Frankly I am addicted to the shrimps and scallops, not to mention the salmon.
The other entree worth mentioning is the filemignon and the ny steak. Both done to perfection.
The only time I was disappointed at Osaka was during busy peak times (Fridays, Saturdays, holidays) when the chefs might get overwhelmed cooking for up to 11 people at once, the quality then definitely suffers and your entree might get "contaminated" with someone else's dinner. Remember all the food is cooked in front of you on a large steel hot plate, the size of 2 x 4 feet.
The other thing to consider is that you will be seated at the same table with other people. This might be uncomfortable for some and you might get mixed with a wrong group. A couple looking for a quiet dinner sharing a table with a family with two bratty kids who scream for hamburger and fries = unpleasant experience.
The decor is not much, but I prefer food over decor. There are too many expensively decorated and staffed restaurants in this city that serve poor food.
Desserts. Skip and go few blocks down to Death by chocolate.