Above all, space exploration is just really cool. And I think that is ultimately why we even have a space program. So, not surprisingly, NASA has provided us with some rally great graphics to show off how really cool going back to the moon really will be.
Check out this site for all the good space coolness NASA is proposing. I particularly recommend the video and slideshow.
The one thing I noticed was how similar the proposed spacecraft look compared to the original Apollo moonships. NASA admits this with one official saying, "Think of it as Apollo on steroids."