I have a soft spot for IBM as the creator of the IBM PC, which in turn led to GW-BASIC and many hours as a kid tinkering. There was something very nice about the typeface and extended ASCII characters of the PC.
A snappy answer when asked about dressing casually at IBM (devblogs.microsoft.com)I noted in the past that Microsoft engineers had trouble fitting into the IBM corporate culture when on temporary assignment at IBM offices in Boca Raton, Florida. In particular, they struggled with so-called “security violations“. I noted that one such category of security violation was “wearing shorts to work.”