Restaurant Suggestions Downtown T.O. for visiting guests?

[badbhoy]

I have a couple of relatives coming over from the UK and would like to take them out somewhere nice while they are here. They are experienced foodies so I would like to take them somewhere impressive and unique. Price isn't an issue as long as it is good value and a memorable experience. We will be going out on a Sunday night and would like it to be in a neighbourhood that may have another spot to drop in for a drink before or after. (Yorkville, Little Italy?)

Any suggestions?