Weekly trivia, Jan. 23-29

On my Twitter, I recently started the habit of posting some trivia facts. I'm going to collect them and post them here for those interested, complete with sources.

• In Full House's earlier seasons, the Olsens were credited as one person -- "Mary Kate Ashley Olsen." (Source)
  
• McDonald's McNuggets contain trace amounts of... lighter fluid. (Source)
  
• The Japanese parliament is called the National Diet of Japan. (Source)