NASA is sending a probe to Pluto, and asking people to add their names to a list that will be included in the shuttle payload. If you would like to add your name to the list, here is some information from Slashdot
"NASA is preparing to send the New Horizons probe to Pluto. It will be the first earth device to get intimate with the icy planet. And you
"NASA is preparing to send the New Horizons probe to Pluto. It will be the first earth device to get intimate with the icy planet. And youcan be there too - or, at least, your name. NASA is asking everyone to send them their names, which will be attached in the space device. The New Horizons probe will be launched in January 2006 to explore Pluto and the Kuiper belt, in the outskirts of the Solar System. It is expected that the probe will return to earth in approximately 50 thousand years."
I have added my name to the list. This is probably the closest I will ever come to traveling in space, though I wish that was not the case.
NASA link: Pluto Probe