A British comededian in the style of Monte Python.

Chosen by several reddit communities to post only memes about him (that happened to be during a writers strike) to encourage coverage of reddit's problems.

Famous for investigative journalism. Here is a copy from his Wikipedia page: Oliver's comedic commentary has been credited with helping influence US legislation, regulations, court rulings, and other aspects of US culture; this influence has been dubbed "The John Oliver effect".[4][5] This came from the show's fifth episode, which dealt with net neutrality, a subject that had previously been considered obscure and technical.[101] Oliver documented problems attributed to internet service providers and argued that the Federal Communications Commission (FCC) could resolve these concerns with upcoming changes to internet regulation. Oliver then encouraged viewers to submit public comments through the FCC's website. The FCC's website promptly crashed.[102]

That is about all I know about him