There is a table of "generational markers" as generated by Jennifer James for her keynote at the 2007 National Staff Development conference http://www.pkwy.k12.mo.us/
I have no information as to how she generated this: some of the statements seem questionable (e.g. repeating the traditional ideas of technology-competence being linked primarily to age). However, these things can always be starting points for discussion.
Photo by Sheila Webber, April 2008