Delicious. One of the few fights my wife and I had was when she offered me some of her sushi she had just purchased and I put some butter in a pan and lightly seared both sides and then sat down next to her... and that's when the fight started.
Tasted delicious though, had her try it and she agreed that it tasted better cooked but also that defeated the whole premise of Sushi and I was going to hell for doing this thing.
She no longer offers me sushi. Also, it turns out sushi people are just eating raw fish because they are pretentious and not because it taste better raw.