Art "retired" a while ago, which meant he only did a few shows a year, but now he's done doing any shows (he didn't do the annual new year predictions shows like he had every other year). George Noory does the weekdays, while Ian Punnet does Saturdays and George Knapp does a few Sundays. Knapp is probably the best of the hosts.
I listen to it fairly often, though not as much as I used to do to time and a decrease in the amount of interesting topics. They've only had one show on cryptozoology since last October, and those are usually my favorite. Some of the more out there stuff is still neat if you just listen as if it were a story instead of analyzing it.