Father's day is also good (I don't remember the exact title, the one where they visited Rose's father).

Also, the one with Ursula, Elton, and the shape changing alien. And the one with the captured Dalek. Just good stand alone stories that still provide hints to the larger picture, so that when you're ready for the bigger stuff, you can start watching the non-standalone eps (the ones that rely heavily on familarity with the time war, the doctor's past, his relationship with rose, etc) like the ones with Donna.