An excellent talk about Systemd the reasons why it's needed, what it's place in UNIX world and some more stuff on general open-source culture.
Basically, as the name suggests, a greek tragedy in 5-parts about systemd.
I also like this talk, about #OpenAPS, or using opensource to connect insulin pump, reader to regulate blood sugar levels of people with type 1 diabetes.
Generalistic and moderated instance. All opinions are welcome, but hate speeches are prohibited. Users who don't respect rules will be silenced or suspended, depending on the violation severity.