Bill Zemanek.WIRED Sept/Oct 1993 (issue 4) Zemanek, a San Francisco based advertising photographer who hung out with EFF members, featured in the early issues of WIRED. This blur / filter pic of ILM's Mark Dippé and Steve Williams was indicative of a style that was soon replaced by the 'Don't pay for a photographer, just give me any old pic and a few Photoshop plug-ins' school of illustrating their articles. In itself this didn't set a new style in representing computer users, but it gave permission to treat anything other then the text (other than hardware shots which stayed clean and advertising safe) as a graphic.
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Zemanek's photograph above of  Tom Ray from WIRED Feb '95, is an 'in camera' version of the overlay that became a WIRED graphic cliche.

This is another photo variation when the subject isn't significant enough for the Citizen Kane treatment mentioned earlier. It's usually a speaker at a conference, who after the session is persuaded to stand in front their PowerPoint presentation on the video projector. See the picture of Paul Budde.

Tip: Avoid projectedcolour  images that make it look like you've got a skin disease in black and white.