Known Universe premiered this month on the National Geographic Channel. If you missed it, I suggest you find out when it will air again.
It's a three part series: The Biggest and the Smallest, The Fastest, and The Most Explosive. It covers topics like the time-space continuum, the Big Bang, black holes, meterorites, gravity, and much more. It can be intense at times with some discussion of the likelihood of future dooms-day scenarios, but mostly it is filled with lots of great physics and astronomy presented in a clear and engaging program.