SERIES PREMIERE: Here it is, the first fresh offering from a commercial broadcast network that’s worth watching this summer. From executive producer Terence Wrong, it’s his latest documentary fly-on-the-wall look at hospital staffers and patients, this time in some well-chosen, well-staffed New York hospitals. Wrong may be slipping (I didn’t shed tears, this time, until episode two), but I don’t think so. Once again, it’s a summer series that plays to, rather than i