Phil Plait over at Bad Astronomy blog posted recently about an interesting point about the NASA budget that is always under fire.
The short version: space exploration costs us very little. Need I remind you that we are basically setting fire to $11,000,000 per hour in Iraq? When I talk on this topic, I make an analogy: when your disk drive is full, do you go through and take hours to delete thousands of small text files, or do you delete that one big 3 Gb video file you never watch? NASA is a text file on the hard drive of the government.
Phil's post is about an article in Parade Magazine written by Neil Tyson and the ignorance of the general populace.
LINK to Bad Astronomy Blog article mentioned above