Some of the apps I use:

  Google apps (Docs, Gmail, Maps, Talk, + etc)
  Polaris Office
  Local banking apps 
  Local public transportation and taxi apps
  Whatsapp
  Facebook
  Dropbox
  Linkedin
  Skype
  IMDb
  RealCalc
  ConnectBot (SSH client)
  XE Currency (exchange rates)
  ES File Explorer (for access to SAMBA shares)
  ChromeMarks (for sync of bookmarks to Chrome bookmarks)
  Shazam (finding artist/songname of playing song)
  Barcode Scanner (for work)