I am a purist when it comes to martinis, but the gin with a bit of sake comes very close, I actually like it. In one place they had wasabi-filled olives in it, makes me thirsty...
Although I'm a definite non-fan of martinis, I did give the sake variant a try once. Alas, it was no more suited to my taste than any other martini I've had.
Wasabi-filled olives on the other hand sound like a great idea!