Ment to comment on this yesterday.......
I was out both Friday and Saturday nights and saw this. Of course seeing Jupiter in and of itself through a telescope is amazing whether it has 4 or "5" moons. The pictures on that site don't do Jupiter any justice. Even using my small 4" dob I can make out her rings. Using my 10" dob...... wow. Through some colored filters on and they really snap out at ya. I have a few favorites in the sky that I can just look at for hours and Jupiter and her moons are one of them. Saturn, the Pleadies cluster, and of course our own moon.
I will sometimes just sit outside for hours crusing the night sky trying to find as many Messier objects as I can. For the longest time I didn't know what I was looking for trying to find the Andromeda galaxies M31 and M32 from my back yard. While out in West Texas where the skies are very dark these 2 can be seen without the aide of a telescope but elluded me for the longest time even with my scope. I'm now sorta computerized and use a pointer and a book to help me identify various objects.
A really neat site for what you can see in your back yard and not just Saturn........ go here
Enough rambling for now....
here's some more great sites for software and charts
and this one ROCKS! http://www.stellarium.org/
I've used all and they are all FREE!!