I would like to get pictures of Comet Schwassmann-Wachmann 3, the comet that is currently disintigrating as it nears the sun. Unfortunately, though, our observing schedule is very packed, and there is no time for a "fun" image.
So imagine my surprise when I took an image of one of our fields, and there was a bright comet in the corner! It was Fragment C of Schwassmann-Wachmann 3, the brightest of the pieces. The chances of having this appear in our field are pretty small -- our camera covers about one square degree of sky, and there are over 20,000 square degrees of sky visible at any one time! So this was a one in 20,000 chance.
Too bad I didn't play Powerball today.