Q: What has happened to Sam, the weather guy on "Good Morning America"?

A: Sam Champion has joined the Weather Channel, where he will host a morning show beginning March 17. The show will be called "AMHQ With Sam Champion," the letters standing for "America’s Morning Headquarters." It will air from 7 to 10 a.m. live from the Weather Channel operations in Atlanta. Co-hosts will include Maria LaRosa and Mike Bettes.

Q: We loved the show "Unforgettable," about the female detective with the amazing memory. Is it coming back?

A: Look for the drama to begin a third run on CBS beginning April 4. It remains a surprising success, canceled after its first season, then brought back from the dead with a casting and story overhaul for a second season, then picked up for another go-round. Poppy Montgomery stars.

Q: Do you have any information on the change in cast for the current "The Borgias" on Showtime vs. the original cast in "Borgia" also on Showtime? Looks like Seasons 1 and 2 were remade as we saw them on the original series and see some changes in the current series.

A: Instead of being a recasting of a single series, "The Borgias" and "Borgia" were two different series covering some of the same historical ground and airing around the same time, albeit in different venues. "The Borgias," which aired on Showtime, ran for three seasons beginning in 2011. It starred Jeremy Irons as Rodrigo Borgia, who became Pope Alexander VI, and was created by Neil Jordan. "Borgia," also known as "Borgia: Faith and Fear," was created by Tom Fontana and stars John Doman as Rodrigo / Alexander VI. It has aired for two seasons on Netflix; a third and final season has been shot for eventual telecast.

Since the two series were commissioned at about the same time, there was an attempt to get Fontana and Jordan to join forces, But, Fontana told me once, "We realized Š that we wanted to make two completely different versions of this story. From that point on, I just decided to pretend that the other one doesn’t exist."

Q: I sometimes enjoy watching the Marx Brothers. In all of their films, and on sitcoms that Harpo appears, Harpo never talks. Was Harpo just acting, or he really couldn’t talk for real?

A: Harpo Marx was famous for his pantomime skills, accented by his not speaking. But that was the act: he could speak perfectly well, although he seldom did in public in order to preserve the magic of his character.