Apparently I open my eyes at night and babble to people who are in the room? How bad is that?

Not rare / worrisome. This is called sleep talking and generally occurs in a deep sleep state, early into that nap or sleep. It is considered by some a sign of a sleep deficit. If the issue bothers you try to schedule at least an extra half hour/night for sleep and you would be less likely to do it.
Not. It is like "super dreaming"gather insight from the people who observed it.