Here's where the space program should go from here, IMHO. As Marjorie pointed out, I used to work at Kennedy Space Center, and have more than a passing interest in the subject, but only enough knowledge to be dangerous.

1. Investigation of Jupiter's moon Europa. Widely cited by scientists as having the best chance of sustaining life in the solar system besides Earth. Under all its ice there's believed to be an ocean warmed by thermal activity. Exploring it will pose some interesting technical challenges. If we were to find life there, it would eclipse all the combined scientific achievements of the space program up to this point. And we would have to come to the conclusion that, if life could spring up separately twice in the same solar system, it must be ubiquitous throughout the galaxy.

2. Investigation of other potential life-sustaining moons, such as Callisto, and, I think, Ganymede?

3. A comet landing. Comets have played a crucial role in the evolution of our solar system, possibly even seeding our planet with the necessary raw materials for life, and have also been the likely cause of ecological disasters.

4. An asteroid landing. Probably the best scientific bang-for-your-buck.

5. Exploration of the outer planets. This is our best picture of Pluto and its moon.

All of these should be unmanned. Not that this is cowardice in the face of disaster, but because man in space hasn't been a good idea for a long time. Launching humans is just an expensive conceit. I don't know, maybe it's necessary to keep public interest and therefore public funding, but to me that just says that public opinion needs to change...