Here’s another edition of the showbiz segment I do each Friday on my KTRS show with Colin Jeffrey. This week, we talked about “Avengers: Age Of Ultron” and whether, with CGI and stunt people, you even need big-name stars for a special-effects blockbuster like this. We also discussed a reboot of “Gremlins,” news about the upcoming “Star Wars” sequel, and why “Ex Machina” tanked at the box office. Listen to our conversation here.