I had a long post all typed out and lost it, damn.
Tonight I was out just at sundown checking out Jupiter and 4 of it's moons and the Earth's moon.
Probably the three biggest stunners in a scope are in order Saturn (everyone loves this one), the moon, Jupiter. It's cool to see a planet and it's moons, and there's so much to see on the moon, especially now when it's only a quarter moon. Full moons are actually the most boring in a telescope. When you've only got part of the moon lit, the part closest to where the light and shadow meet is neat because of the contrast between light and shadow. I think Saturn is coming up really late at night these days, but in a couple of months, it should be up early enough for the kiddo to see.
Other than that stuff, the next two coolest things are probably Orion's nebula and Pleiades's.
After that, the easiest to find items are the Messier objects,
Messier Maps
They aren't all easy to see, some are pretty hard if you are anywhere near a city, but they are probably 110 of the easiest items to find besides the planets and the moon.
If you don't already have an Astronomy program, get Stellarium (It's Free). It's really cool. You enter your location (or even remotely close is good enough) and it will show you what's in the sky above you right now (or whenever you want, you can scan through time forwards and backwards). The planet's and their moons have the correct motion (if you see 4 moons of Jupiter, you can figure out which 4 you saw). You can zoom in and out and for some items, see photos. It's very cool.
If you have any questions, post them. Besides me and Mike B/Pazazu, there are a few more folks that peruse the skies on the board.