A friend of mine just got his last ribbon today, trying to find out when he last played. Maybe it's updated recently today, but he's offline ATM so can't find out.
347 completed games & apps to 100%
91.58% completion percentage
Last 100% Completion : Trials Fusion - After The Incident DLC (250g) (Xbox One)
Thanks to Rajeanero for the avatar and Mr Chaotix for the sig.