Comment I used BeOS for audio analysis (Score 2) 226
I mostly used BeOS in grad school because I liked alternative operating systems, but several times I'd try to port my work to Windows or Windows NT and find myself astonished at how impossible my this stuff was to do on other computers at the time (late 1990s.) NT's architecture and event processing often prohibited the sort of real-time audio and video apps I was writing, and the API standing between me and the data was much more restrictive.
In retrospect, I think a number of my research successes were accidentally due to using an OS that would let me implement some really nutty ideas.