Recommended iPad Apps

Got myself an iPad Air 2 and it is pretty stunning - what Apps should I get for the wonderful tablet apart from the usual like Sky Go, iPlayer etc?

Is Office 365 good on it? I may have a spare license to use.

Kind of a wide open question, so I'll just name a few things that I find to be great.

PlayStation and Xbox SmartGlass, depending which consoles you use. Then there are game-specific apps for things like CoD, BF4, GTAV, etc.

Amazon and eBay apps are very well designed, especially the latter.

I can't remember if they come pre-installed now, but if not, you should have free access to download the Apple productivity apps: Pages, Numbers, Keynote, iMovie and GarageBand. The last two are particularly good.

And then there are all the games. Some of my favourites that work well on the iPad: SpaceChem, World of Goo, and Osmos.