You sir, are correct (i recently moved to the uk, and have seen both (while for ironchef, theres no comparison to the japo verison)
for those of you who havent seen ready steady cook. its almost exactly what your talking bout, they have celebs come on are bring ingredients to make a meal (they can spend as much as 7.50 to buy the ingredients, but usually have 4-5 things to make... much more then ironchefs one...)
anyways, i to think thats an amazing idea.