I absolutely LOVE Osaka. My primary reason for dining there is their Teppan Grill. The chefs create a fun, entertaining show while preparing your food in front of you, however you like it prepared. It's great for the kids (and they have a toy filled treasure chest for them to dig into!). Some of the dishes can get just a little bit pricey but you get a TON of items included with your dish. For example, I get the filet mignon ($28) but this includes salad, soup, your entree, appetizer shrimp, rice, veggies AND ice cream! The servers are friendly and they come back often to check on you and fill up your drinks (my pet peeve). Can't afford the dinner time prices? Stop in for lunch from 12-3pm and enjoy your favorites from $8.95!
Make sure you sign up for their email club before you go. You'll get a 10% off coupon and also get a VIP Osaka card while your there. You can earn money for future Osaka visits. Enjoy :)