any app or site that will plot down TV show schedules/air dates?

I've started watching a lot more new shows lately and I'd like to have an app or maybe a site make calendar entries of new shows for that week and next so I don't forget.

The NBA has something like this where they have an outlook file that you can import into your calendar to show dates of that team's games for the season. Since TV shows can skip certain weeks and go on hiatus, it maybe better to have an app that updates every week to show when the next episode will air.