I agree with what several of you have said about the true prize being the memories of performances and indeed how they inspire. As someone who knew early on that I was going to pursue acting there have been performances that stand out to me as the ones that made me want to keep going, keep studying. When I look at my playbills now, the signatures dont represent an autograph but rather the memory of how I felt after, how I had been affected. Ones that stick out to me are Michael Cerveris in Sweeney Todd, John Gallagher Jr in Spring Awakening, Patti Lupone in Gypsy, Phillip Seymour Hoffman in Death of a Salesman, Alan Cumming's tour de force performance of Macbeth and most recently Cynthia Ervio in The Color Purple.
That said, i do have one windowcard that remains inspiring to me that I look at almost every day. Everyone got to see the Hair revival before I did. Every friend and family member. I didnt catch it til I went to London. My mother saw the entire revival cast and like any proud jewish stage mother was telling the cast about her son the actor currently training in a B.A. program. The cast responded telling her they wish that all theatre parents were supportive like her and began signing the poster with inspirational messages to me to continue to pursue my craft. Things like "You'll make it" "Follow Your Bliss" "Go Cubs and Go you!" (we're from chicago) and other things from the entire Hair cast. It's framed on my wall and is easily my greatest theatre item.
<------ Me and my friends with patti Lupone at my friends afterparty for her concert with audra mcdonald during the summer of 2007.
"I am sorry but it is an unjust world and virtue is only triumphant in theatricle performances" The Mikado