God, I miss that show. I completely forgot about Tyrell, I was mostly thinking of actual UNIX greybeards disguised as banking CTOs I've met earlier in my career :)
He's the author of Gnus. The news/email reader. It's a little crazy but a huge piece of work. Related to this was http://gmane.io/ which is a mailing list to NNTP gateway (so that they can be read using Gnus).
He wrote the Gnus news reader. Many years ago I found a bug in it on a Friday morning, I searched around and found out how to report it to him, by the afternoon of the same day he had notified me of a work around!
1. A suit-wearing person that's so far removed from technology he's just a glorified manager hunt-and-pecking in Outlook all day.
2. A suit-wearing person with a permanent PuTTY window connected to the ageing AS-400 system still running in the basement.