The Summer 2008 Productions for Shakespeare In Park at the Delacorte Theatre have been announced and here’s what’s happening and when: HAMLET By WILLIAM SHAKESPEARE Directed by OSKAR EUSTIS May 27 – June 29 With Michael Stuhlbarg and Richard Easton HAIR: THE AMERICAN TRIBAL LOVE-ROCK MUSICAL With book and lyrics by JAMES RADO and GEROME…