Not sure if anyone else noticed this. I stumbled across it by accident myself, but thought it was kind of cool.

|I was just watching the Doctor Who episode "The Lodger." It is the 11th episode of Series 5 (also, the 11th for the 11th Doctor) and I hit pause during the title sequence to answer the phone. When I got back I noticed that I had paused it just as the first bolt of lightning hot the Tardis and, when it was paused, it looked just like the crack in time that has been a theme for this season.

Wonder if that was just a coincidence or if they meant to do that.