"Hacking Away at the Counterculture" compares computer virus terminology with AIDS virus in interesting ways, examines cultural depictions of hackers as the good guys looking out for human freedoms, vs. political and academic responses to hackers (as terrorists etc). As an artifact of the late 80s and early 90s, this piece is especially interesting.
"Understanding Mega Events"provides a good critique of base/superstructure model and posits that many items not considered mass culture really are, and have political potential.
Finally, "Lessons from Cyberpunk" focuses primarily on Gibson's Neuromancer. Fitting argues that he breaks dichotomies common in SF like positive/negative views of the future and human v machine, and in doing so is effective at engaging with postmodernist ideas and elevating the genre.