All I've managed to see in the meantime has been kid stuff and much of that accidental: Karate Kid (2010), Karate Kid (1984), The Duchess (2008), and Clambake (1967).
So if yesterday was indeed the first time I'd seen it, I wish I had not been such a snob. It's a fine and engaging story and Ralph Macchio was sweet, natural, and interesting to watch. I'm happy to learn that Macchio is a decent guy who didn't mess up his life or anyone else's (I'm talking to you, Scott Baio). Perhaps the reason we haven't seen more of him since My Cousin Vinny is best explained by this Funny or Die piece, which I can only link to (perhaps they didn't get their own joke?).