Why PSG vs. Bayern Munich is trending

<p>Tuesday's Champions League clash between Paris Saint-Germain and Bayern Munich ended in historic fashion. CNN's Don Riddell explains why the record-breaking semifinal tilt has fans eagerly awaiting next week's second leg between the two heavyweight clubs. Discover more videos, including live streams and exclusive storytelling, on our <a href="http://cnn.com/watch">Watch</a> page.</p>