Re: Top 5 Episodes/Serials?
The Doctors Wife
Robots of Death
City of Death
And I'll add a special mention for the SJA story "The Wedding of Sarah Jane Smith". Not technically Who, but Elisabeth Sladen and David Tennant acted their socks off in that.
I'm being extremely clever up here and there's no one to stand around looking impressed, what's the point in having you all? - The Doctor, interrupting a very important conversation.