Was the Eye of Harmony what he was trapped in at the end of the 96 movie? Whatever happened, it was before the end of the Time War. That much was stated.
Anyway...
HELL OF A CLASS EP!!
The action, pacing, timing, and Jack back in full force. A fantastic ending and it explained how Jack was on Earth during that 1915 incident he mentioned in Torchwood. And there were more than a few laugh out loud moments between Jack and the doc.
Although, there did seem to be a little continuity disruption between the end of Torchwood and this ep.
The Tardis never appeared inside the Hub, so what blew those papers around? Also, how did Jack hear the Tardis landing when he was inside?
My theory is Jack had audio linked to the outside designed to trigger when it detected the Tardis landing. And he could have quickly thrown that hand jar into the bag on his way out the escape route.
Though the comment about 'I've missed this' running around chasing people. Did the journey through the vortex mess up his memory? What did he think he was doing in Torchwood, chasing fairees? Oh, wait, he was.
Thoroughly looking forward to the next ep (missed the teaser at the end so I have no idea what to expect. Except more Jack goodness).