We had a tripleheader last week. At its closest point to Earth, Mars was at opposition. The moon was in front of Mars on December 7th and 8th. The event was captured by our Astrophotographer friends.
Alan Dyer, an amateur astronomer and photographer who lives in Canada, created a picture of the night's activities from observations he made from his home. It was the Moon that was passing in front of Mars, not the other way around. To keep the Moon more or less stationary on the frame, I set the telescope mount to track the Moon at its rate of motion against the background stars and Mars.
There are some great views from all over the world.
Andrew McCarthy's view from Arizona is amazing.
The view from England is stunningly clear.
There are more great images and videos on this page.