What's a good H for someone like me?

I have no idea.  But Google Scholar Citations makes it easier to find out.  They've added a feature called Google Scholar Citations that allows scholars to create their own scholar citations page that includes an H-index, which is a citation index that measures a mix of productivity and popularity in citations.  It also includes other index scores and a timeline of when they were cited.  I wouldn't want it used in my promotion evaluations, but it is fun to play around with.