The original production by John Dexter was intensely theatrical. I can still remember Peter Firth in the role...and Tom Hulce...and Keith McDermott.
I kept going back to see it--ostensibly to see Richard Burton and Leonard Nimoy take over from Alec McCowen. But of course I enjoyed seeing the Equus boys naked--I was only 17 myself. And the diva component was high: Roberta Maxwell and Frances Sternhagen AND Marian Seldes!
But it was Nugget who got to me. Whenever Everett McGill (sigh...) or David Combs (mmm...) was onstage, hands held behind his back, as if tied, standing upright, bending one muscular leg at the knee and stomping slowly with his foot, eyes staring, nostrils flaring proudly...I was, um, rapt.