It's still a bit too hot in Tokyo to really enjoy a good bowl of donburi, but I wanted to start a thread on this dish anyway. Donburi can be anything placed on a bowl of rice - beef (gyudon), tempura (tendon), tonkatsu w/eggs (katsudon), chicken w/eggs (oyakodon), tuna (magurodon), salmon eggs (ikuradon), etc. There's even a thing called loco moco, which is hamburger, fried egg, and brown gravy over a bowl of rice - kind of gross in my opinion but still donburi. So it's basically a variation of a Japanese dish, not really Hawaiian as most think. If you're really hungry, donburi will satisfy. Try it the next time you're at a Japanese restaurant.