This issue was discussed already in 2002 in this thread: http://www.shatters.net/forum/viewtopic.php?t=628&highlight=seti but since Celestia has evolved a bit since then I put the request here again.
Some astronomical software (Starry Night, Winstars) has a feature that let the program co-operate with the SETI@home-client. In other words, the program connects to the client and a marker shows the part of the sky where the last info-package is taken from.
I don?t know if this is really a useful feature, but it would be fun to have it in Celestia