I've seen 93% of old Who. Everything but 48 episodes of Peter Davidson, and Happiness Patrol of Sylvester McCoy. I've seen the best: Arc in Space, Spearhead in Space, Power of the Daleks, I've seen the worst: Edge of Destruction, Paradise Towers, the Invasion. Bleh. XD
I finally got the never to watch the Doctor's Christmas Carol and 7 minute comedy relief.
The Christmas Carol was okay. Not particularly good, not particularly bad. For a person who has never seen Doctor Who, I might recommend that as a so-so introduction. Matt Smith gibbers just a bit too much, he's got an on switch and no off button at times more so than any other doctor. The time travel into the old man's past and showing it to him was really timey-wimey. If I were the old man, I would have been very pissed that the Doctor was screwing with my past like that (like he was towards the end). The shark was cool at the end, the pulling the sleigh, but the 'trying to stun it, not kill it while it wants to eat you' was kind of really stupid. To a stronger doctor like Tom Baker, maybe, because he would always have an air of confidence even in the face of death, not the 'two tries and then it's your turn.'
The companions were not very useful this episode, they were just kind of there. I do not like the companions being 'stronger' than the Doctor, having to carry him around (Castrovalva), but companions are supposedly a cut above the rest (depending since several were kidnapped and others were stowaways). They usually hold their own in old who (since most virtually never listen to the Doctor and wander on their own) and assist the Doctor.
In the end, the Christmas Carol can be marked as one of Doctor Who's silly episodes along with Planet of the Giants, The Chase, Enemy of the World, Death to the Daleks, the Two Doctors, Remembrance of the Daleks, and the Silver Nemesis. Just about every Doctor had a serial where the comedy was upped to counteract a more serious plot, and for me, I usually enjoy them.
As for the comedy relief Space and Time, it was nowhere near the quality of the Curse of Fatal Death. More Timey-wimey stuff, Amy looking at herself was decidedly very creepy, and most of the jokes just kinda slid by me. Not to say I didn't laugh once, "The wobbly one!" got me, but the rest was more run of the mill.
I like to watch Curse of Fatal Death, I turn it on every now and again, it is the first video I recommend to new fans who have never seen Doctor Who. This one, however, I probably won't go back for a rewatch.