> To the nostalgics among us: what made OS/2 special?

I started out with OS/2 v1.1. It had threads, DLLs, multi-tasking, much larger memory space, and from v1.2 a somewhat decent filesystem. Coming from DOS 3.2/Win 2.0 this was an incredible leap, in particular the SDK was amazing compared to the ragtag assembly of info I was used to. The _delta_ between two systems haven't been this large ever since, and I think that is what contributes to the "magic" feeling.