It's quite good, though a bit odd. Julie Andrews, of course, is closely tied to the composers, with My Fair Lady and Camelot. Robert Goulet not only got his break in Camelot as Lancelot, but later toured in the show as King Arthur, and also starred on TV in a production of Brigadoon. And Joel Grey, he...well, hmmm, he really doesn't have any connection to Lerner and Loewe. He's a great Broadway performer, but he sort of stands out here -- and it's not just that he has no real connection to them, but they don't give him all that much to do.
But the oddest thing about the video is that here, in a tribute to Lerner and Loewe, that includes Robert Goulet... they don't have him sing the song that made him a star. No "If Ever I Would Leave You." And it's not like they ran out of time and couldn't cram it in -- the number lasts for almost 15 minutes.
But it's still a very good tribute medley. Just a bit odd.