It should come as no surprise that I love Uses This. They recently profiled Eugen Rochko of Mastodon (the social network, not the band; feel free to follow me there!). Unsurprisingly, Eugen is a committed Linux user.
I was also interested in this Paul Ford profile. He uses Apple hardware but mostly seems to use Emacs as his OS.
Man I love Uses This.
Eugen Rochko, Developer of Mastodon | Uses This