Last summer, I went to a friend's wedding. There was a thunderstorm parked pretty much on top of the hall. So it was POURING, and anyone unlucky enough to have forgotten an umbrella got soaked to the skin walking from their cars to the entrance. The ceremony was to be held outside - obviously, we relocated inside.
At the ceremony, the rabbi started talking about how this wedding was taking place in the presence of the couple's families, their friends, and God - well, as soon as he said "God" there was an enormous thunderclap! We all burst out laughing at the timing, and the rabbi said something like, "Yup, He's making His presence felt, all right."
A few minutes later, a very noisy A/C unit kicked on, and the staff couldn't figure out how to disable it, so it was very hard to hear the rest of the ceremony.
Meh, they're just as married.