In a paper on computer supported collaborative work I was reading recently, I read this line in the opening paragraph:
This has partly to do with the fact that in recent years the importance of understanding human computer interact ions in social and cultural context has increasingly been acknowledged.
I spent longer than I should have trying to figure out what "interact ions" were before I realized that there had simply been an extra space inserted into "interactions."
I still think "interact ions" sounds like an excellent Media Lab project.