The Pokemon anime has been on the air since 1997. That's kind of a long time. The series has quite an episode roster as a result. If you're starting from episode one, it might take you a long time to get caught up. Good thing you can watch Pokemon eps with a new (and official!) app for iOS and Android.
Pokemon TV lets you tune in to select episodes of the anime. It also offers movie trailers, and more. All for the low, low cost of zero dollars.
Download Pokemon TV for iOS or Android. Incidentally, I've updated the Pokemon on iPhone? page to include mention of these neat-o apps.
Image © Nintendo