Amiga Accomplishments!
1) Genlock (first personal computer to integrate video)
2) First true multi-tasking operating system that came standard on a PC (Unix machines weren't PCs back then they were workstations)
3) First computer to use co-processor chips that function independent of the CPU (i.e. the Bimmer (or super blitter).
I am sure there is more than these but this is the first that comes to mind..
