Indie game dev: https://www.youtube.com/user/WolfireGames
Clojure talks: https://www.youtube.com/user/ClojureTV
Android: https://www.youtube.com/user/androiddevelopers
A filmmaker I enjoy: https://www.youtube.com/user/caseyneistat
[Shameless plug] Computer science paper presentations: https://www.youtube.com/user/PapersWeLove