Adrian Grenier. (Allen Berezovsky/Getty Images)

• Adrian Grenier
busy with his cellphone, alone in the lobby of the W Hotel late Wednesday morning. Looking unusually suntanned in a suit. The “Entourage” star was in town for his new celebvocacy cause, “Mobile Kitchen Classroom,” which aims to teach NYC public school kids about healthy eating and growing vegetables and such; he tweeted that he was headed to a White House meeting.