Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
KDE is again participating in Google's Summer of Code. We did this last year and got 24 exciting projects running. They had all kinds of results, from widely successfull over interesting concept to mild failure. I mentored three projects and it certainly was a great and enjoyable experience, so I will be a mentor again this year.
There already is a list of ideas for KDE projects in Google's Summer of Code 2006. It includes lots of interesting stuff. There are general ideas like implementing new concepts for rendering windows on the desktop, web services development tools or innovative ways of providing online help for applications.