I'm joking (kinda)
If you're doing any photo editing, I'd recommend getting Aperture or Lightroom, similar programmes but with really easy to use interfaces.
Also, set up spaces on it, makes things alot easier and stops from clogging up your screen with 5 different programmes.
An app i'd definitely recommend getting is caffeine. It stops your computer from going to sleep, so it doesn't stop uploading a video or something. Just saves you going to system preferences and changing it all the time.
Get MPlayerX too, a really nice media player with cool controls, like swipe to fastforward or sound up etc.
Enjoy your MBP!