Conversation so far:
Who are interviewed on The Daily Show?
In The Daily Show's third act, the host conducts an interview with a celebrity guest.
Who are some of the guests that The Daily Show have received?
Vicente Fox and Justin Trudeau have been guests on The Daily Show.

Question: who are the most prominent guests they have received so far?
Self-contained rewrite: Who are the most prominent guests The Daily Show have received so far?