Has Apple ever bought a high-profile company? They make acquisitions now and then, but they seem to be mostly (all?) companies that have solid tech but aren't o

Has Apple ever bought a high-profile company? They make acquisitions now and then, but they seem to be mostly (all?) companies that have solid tech but aren't on the public radar, or at least weren't pre-purchase: P.A. Semi, Siri, that kind of thing. Arguably NeXT falls into that category as well, although it's a bit of a special case since it was Jobs's company.