Brian Matthew and it was a weekly event. Needless to say, during this time it was required listening for anybody in the States who had any passing interest in British Invasion groups (i.e. The Beatles and Rolling Stones, who were frequent performers) but also gave a heads-up for up-and-comers to keep an eye open for in the Import bins at the local record shop.
If you've never heard the show before, here is an episode (which, like all good nutcase collectors, I conned a Station Librarian out of), and a slice of history you may have never been able to hear otherwise.
Thank a dumpster diver if you like this.