Great question! I've not done them ALL (of course now that's a challenge!) but I have done:
Chefs de France (France)
La Hacienda de San Angel (Mexico)
Le Cellier Steakhouse (Canada)
Princess Storybook Dining at Akershus Royal Banquet Hall (Norway)
Rose and Crown Pub and Dining Room (United Kingdom)
San Angel Inn (Mexico)
Teppan Edo (Japan)
Tokyo Dining (Japan)
Of those, my favorites are Le Cellier, Biergarten and either of the restaurants in Japan. Given the price and option changes in the past few years at Le Cell, I've taken to booking at an "off" time and just going for wine, soup and bread. I confess I adore the atmosphere there and refuse to give that up, but if it's a steak I'm after - there are far better places onsite and off. Biergarten is just fun, IMO. The food is plentiful and diverse enough to meet different tastes and, again, I love the atmosphere.
Of the one's I've not been to, but would like to try - the restaurant in Morocco and the new one in Italy top the list.