My undergrad email server at University of Rochester was a two node SGI origin 200 cluster, which is where I learned unix and C, and later in my career, through a series of amazing coincidences, had the honor of working at startups with a few of the UofR sysadmins who used to chase my hacker friends and I around their network.

IRIX has an amazing and indelible place in my heart for being the playground that taught computers to me.