Nimoy was one of the first celebrities I spotted when I was attending NYU in the 90's. I was around mid-town, going to pick up some developed camera film (part of my work study gig), and I had to go down some pretty empty side street that no one else was on. Leonard had just opened his new play that he was directing, and I guess had ducked out the side entrance of the theater. We were the only two people on the street, and he kept peering back over his shoulder like he thought I was following him. After quite a few weird stares, and a noticeably picked up walking pace, he hailed a cab as soon as he hit a main street and with one last creepy glance in my direction vanished down Broadway.
His play closed a couple of days later after horrible reviews.
I'll always love him for being Spock though. He and his wonderful, light hearted self-mocking cameos on various TV shows will be missed.