For your app-roval
Flipboard: Rather rudely, this was preinstalled with other crapware on a previous Samsung phone. But, being curious I opened it and a love affair was born with an endless list of news articles which was more endless than Google News.
Fing: It's like nmap but when you're in an Airport and want to find who is sharing their torrent folder.
MX Player: Back before VLC was in the app store, this was the way go to with various file types and subtitle support