There's so much controversy around these factoids, regardless of what movies might claim, that I won't argue the point. It's just interesting to me that Microsoft puts so much emphasis on protecting software that has its own skeletons in Redmond closets.
For more on CP/M and Gary Kildall, see:
http://www.patersontech.com/Dos/Micronews/paterson04_10_98.htm
and even this reference is cloudy on facts...