John Lannan, after giving up two first inning runs in the second of a double header last Saturday, pitched wonderfully. He was surprisingly demoted before the season started and made a memorable first start of the season. It's important because he'll likely be called on in September when Strasburg is shut down and could end up starting in the playoffs (should the Nats make it) if things lineup a certain way.
I remember Ross Detwiler when he threw out the ceremonial first ball after signing his first contract. He bounced it and I booed. But I've believed in his stuff. The problem has been his stamina. In the past, he's gone only about 5 innings and that can kill a bullpen. In his last two starts, he hasn't given up any runs, but more importantly, he went 7 innings in both. That's a welcomed development.
The major thing being overlooked in the Nats special season so far is Jesus Flores's defense. He is one of the best I've seen at blocking balls and calls a great game. When he's not in the lineup, it's obvious. And that's no disrespect to the other catchers, it's a compliment to Flores.