Watched this again last night, a few thoughts:
1)Trivia: Lynda Baron that played Wrack sang the "Ballad of the Last Chance Saloon" in "The Gunfighters".
2)The Doctor replaces his celery on Wrack's ship. Now the celery he took in "Castrovalva" was a creation of the Master, and since the contents of the ships are apparently products of the Eternals' imaginations, does that mean that the Doctor's celery was never real?
3)The White Guardian is also made to wear a bird on his head. Seriously, whose idea was that?
4)"You are a Time Lord. A Lord of Time. Are there Lords in such a small domain?" Funny to see the Doctor dealing with people who look down on him as a lower life form.
5)Fielding cleans up nicely, I thought she looked good all dolled up.
6)"Love? What is love? I want existence." The guy playing Marriner does a good job playing the creepy, affectless stalker.
7)I liked the touch that "Enlightenment" was too bright for even the Guardians to look at directly.
8)"It seems enlightenment is yours, Doctor." "I'm not ready for it."
9)"Enlightenment wasn't the diamond. Enlightenment was the choice."
10)"He will be waiting for the third encounter." Be funny if they brought the Guardians back again. I wonder who you'd cast nowadays?
An OK storyline, as ong as you don't think about the plot too much. Part of it's just being glad that the "Will Turlough kill the Doctor?" nonsense is over, I suspect. The DVD set contains a re-edited version of the story with new effects, overseen by director Fiona Cumming. Worth a look if you get a chance.