The show is interesting because it combines a late night talk show format with a news format. Their special segments are often in the same format as a nightly news program, where they take an issue, perform research, and prevent a side.
Should we hold these types of shows to a talk show standard or a news standard?
When CBS presented a fabricated military report about George W., they were rightly condemned for presenting false information and presenting it as fact. If, instead, the fabricated document had been shown on John Oliver, would we think it's OK simply because John Oliver is partly comedy?