Mark Goodacre posted on the scholarly construct Q, and highlights the difference between that and a lost Gospel, one that we knew from its being mentioned in ancient texts existed, but it no longer does. He nicely relates this to the rediscovery of two Doctor Who episodes from the Patrick Troughton era.
Of course, if you identify Q with a text that is so mentioned – such as Matthew’s logia, or as a Greek text which was mistakenly thought to have been translated independently from a Hebrew Gospel of Matthew – then the two may converge.
Mark also mentioned Marcus Borg, who recently began blogging at Patheos. Borg has written a book with the title The Lost Gospel Q. But he also focuses a lot of attention on another “lost gospel” (with a lower-case “g”): the Christian message understood mystically rather than in the manner of modern-day fundamentalists.
One final lost Gospel connection: I had the privilege of hearing the Indianapolis Symphony Orchestra and the Indianapolis Symphonic Choir perform Verdi’s Requiem. In the program notes I discovered that the mezzo-soprano soloist, Sasha Cooke, has also been performing the lead role in Mark Adorno’s opera, The Gospel According to Mary Magdalene!