Tonkatsu, deep fried pork cutlet, is no doubt one of my favorite Japanese foods. Why, oh why, does fried food taste so delicious ? Tokyo offers lots of Tonkatsu restaurants. The most famous one is probably Wako, a nationwide chain Tonkatsu restaurant. However, when we talk about personal recommendation, there are two places I would recommend. One is Katsukura in Shiodome, and the other one is Tonki in Meguro.
There is always something fascinating about the sea creatures and Seaworld is a good place to learn about them. It has a little of everything for everyone. The penguins, the sea lions (I love the show !), the polar bears, the manta rays, Shamu, Kraken (roller coaster), etc. Just be careful that you might get wet. :)