Rose: I thought it was a warning… maybe it’s the opposite. Maybe it’s a message. The same words written down now and two hundred thousand years in the future. It’s a link between me and the Doctor! Bad Wolf here… Bad Wolf there!
Mickey: But if it’s a message, what’s it saying?
Rose: (already running off) It’s telling me I can get back! The least I can do is help him escape!
Doctor Who - 1.13 - The Parting of the Ways
Julie Gardner: We’re on St. Mary’s Street in central Cardiff. And it’s a department store that was established in the very first episode of the series, series one - Rose’s department store, Henrik’s.
David Tennant: Rose used to work there.(The Runaway Bride episode commentary)

David Tennant: I remember when they were filming but I wasn’t on camera, but filming my half of that scene… James Hawes, the director, he came up to me and said, “Come just make them laugh. Be off camera and make them laugh.”
Julie Gardner: Did you? What did you do?
David Tennant: I got Steve, my make-up artist, to paint a big mustache on my face. It seemed to work.(School Reunion episode commentary)
all of time and space, everything that ever happened of ever will.. where do you wanna start?