There were times whilst I was watching this that I felt myself to be distinctly chronologically challenged by the implications of (people) being able to go backwards and forwards in time. Not that that detracted from my enjoyment - quite the contrary - but unravelling some of the time-logic did demand that extra bit of effort on my part. The humour varies between light and off-the-cuff banter between drinking buddies at times, to potentially grave and ominous events at others. I thought the characters were likable and the screenplay was excellent (in an 'ordinary' kind of way). Maintaining my interest was helped by the juxtaposition of the everyday with the unexpected and the inclusion of an uncertain romantic element. A nice blend of sci-fi and scepticism. Great fun for the grey matter.
