Bicycling (commuting and
occasional day trips)
Camping (wilderness)
Canoeing (preferably quietwater
rivers)
Computers (of
course)
Dancing (ballroom, polka, cajun, contra,
square, folk, ...)
Flying (since 1971, private,
single-engine, instrument)
Ham radio (since 1955, amateur extra, W9AV, formerly K4BOM)
Rafting (small streams in southern
Wisconsin)
Skiing (downhill and
cross-country)
Spelunking (crawling around in
caves, mostly in east Tennessee)
Tennis (contingent on a suitable
partner)
Writing (books
and technical papers)
"...the man's a human dynamo" -- DoIT Now, March, 1996