Lee Reiswig (former IBM GM) was crashing Windows in
OS/2
demonstrations in the early-'90s.
Since you mention Reiswig I thought I'd chime in and say that I admire
the guy still for his having made an apparance on the Chiefet/Kildall TV
show "Computer Chronicles", showing OS/2 directly himself without an
assistant and doing a fair job IIRC. This was pretty amazing to me
because Chronicles was pretty much a showcase for 10-100 person
companies' products, and to see this VP make an appearance there
was both good for IBM and the show IMHO.
John A.