Conversation so far:
What is Fallon's online presence?
Fallon dove into the Web prior to the show premiering, creating a Twitter account and beginning a vlog on the show's official website.
Did he get a lot of followers?
Many of the videos received a very high number of views.

Question: What video was the most popular?
Self-contained rewrite: What video of Late Night Jimmy Fallon was the most popular?