The makers of Camtasia are giving away old versions free:

SnagIt screen capture tool:
http://www.labnol.org/software/download/free-download-snagit-with-serial-number/1841/

Camtasia screen recorder:
http://www.labnol.org/software/download/download-camtasia-studio-free/1829/

I think they're both windows only...but they're free!  Maybe the rest of you can get them to work in an emulator like wine?