IMO, the show has been on the decline in the past few seasons. A lot of their recent "Myths" have been nothing more than people questioning physics (bullet fired vs. bullet dropped comes to mind) and them proving that physics is actually right. The show has changed from its beginning where they were testing urban legends, myths, etc, to now where (aside from proving that physics is right as previously mentioned) they're trying to replicate viral YouTube videos and see what they can blow up this week. There's only so long you can keep doing that before people get bored with it.