Photo by Matt.Dunn Whether the show is a classical rendition or a little bit satirical, the palpable anticipation from waiting in the wings is always the same. Here, Matt.Dunn uses the stage’s stark lighting to obscure the face and characteristics of the performer in waiting — whether child or adult. In this case, it’s the Gay Men’s Chorus of Washington’s production of Men in Tights: A Pink Nutcracker. One can only suspect that after…