The third season opener of DOCTOR WHO premiered in the UK this past weekend. There are viral videos of the premiere on YouTube. These are being taken off of the Google-owned site by its administrators almost as fast as people put them up.
As of this moment, these links work:
Doctor Who SMITH AND JONES Part 1
Doctor Who SMITH AND JONES Part 2
Doctor Who SMITH AND JONES Part 3
Doctor Who SMITH AND JONES Part 4
Doctor Who SMITH AND JONES Part 5
doctor who smith jones
And maybe you can find a link that works.
UPDATE April 6, 2007: Yes, all the links were zonked. YouTube user LSMURF has posted the first part of the episode (with a prologue that I hadn't seen). The other bits are easily findable. Who knows? It may stay up for the weekend.