iTunes download all TV shows
If you buy a TV series with iTunes 11 that has at least a couple episodes, iTunes will prompt you to download just the first episode, or all of them.

Support Finer Things in Tech on Patreon
You May Also Like

­čĺ╗ Mail: Open messages in Split View when in full screen

When in full screen, Mail for Mac has an option to open messages and drafts in a separate Split View. It maximizes your full screen mail triage real estate.