Well, if you ever get the chance to rent or download the 9th Doctor...






...do yourself a favor and check it out. It's a lot tighter than some of the current stuff that's been out.

But, if you're just asking about Donna Noble (Catherine Tate)...





...she first met the Doctor on her "almost" wedding day. Then, a year or two later she met up with him again, and decided to take him up on his offer to see the universe.