Harry Kho of Harry's Deli is the wunderkind of sandwiches. Without so much as a backstory, the young proprietor of an office-park lunch stop has single-handedly changed the noontime scene in Irvine. Yelpers fawn over every morsel. Devotees are born every day. Harry has done it by doing what sandwich makers should have been doing all along: constructing sandwiches with quality bread, premium meat and homemade mayo that he whisks himself. But what's most endearing about the guy is how you can tell he is genuinely enjoying every moment of it. And then there's his unflappability. He graciously addresses every piece of online criticism that tries to cut him and uses it to improve his food even further. Now that's something we should all learn from.