Nineteenth Season
As dictated in the trivia for the episodes, Peter Davison had his stories first four stories shot out of sequence to help him get into the swing of things and decide how the Doctor would be played. This highlights that not even the production team knew what they wanted from him. Tom Baker had been such a character as to drown out everything around him.
I think for the nineteenth season, Peter Davison did a good job of holding his own for the most part, but left a character that was for the most part shall we say a little mild mannered.
The quality of stories in this season are dubious to be kind, but there are some real gems in here when Eric Saward gets to play around - namely The Visitation and Earthshock. Many fans like Kinda, but for me it misses the mark and tries to be a little bit too intellectual and hits this side of boring. Still, it was a good attempt.
The season rounds off with a wet fart of a story - Time flight. It wasn't necessarily all the writers fault that it ended so bad, but with time and budget pressures, this was a definite anti-climax to the death of Adric in the previous story.
Twentieth Season
This is the runt of the litter as far as Fifth Doctor stories go. The aim of this season was supposedly to bring back classic monsters in each story, but for a lot of it (because of script issues and strikes) they got altered and shifted. The reality of what we saw was a lack luster resurgence of B list monsters and lots of redundant attempts at suspense.
The majority of these stories were poor, with barely anything to keep the viewer drawn in and engaged. One notable exception was the introduction of Turlough and his treachery, but that was resolved (or rather, should have been) by the end of Mawdryn Undead, so we got eight more episodes of him stupidly trying to sabotage the Doctor and the hollow threats of the Black Guardian when he failed.
If you thought things couldn't get worse, there was the hairbrained scheme of John Nathan-Turner to introduce an actual robot to the cast. It wasn't any worse than the disastrous Time Flight and it was only two episodes, but by god, it's not any better either.
Thank heavens then for the Twentieth Anniversary Special! This was a cheesy ball of nostalgia, but it was done in the right way. It succeeded in every way where Season Twenty had failed abysmally. We got old favourites in abundance, and Peter Davison was more than happy to share the limelight with them. This was the turning point.
Twenty First Season
After the slow burn of a start with Warriors of the Deep, this season finally got to where the Fifth Doctor stories should have been from the start. Only Planet of Fire was a miss, the rest were more or less slap bang in the middle of the target. The stories were gritty, engaging and raised the stakes with the Doctor in a way that hadn't been seen since Season Fourteen. This was a sign of great things to come as The Caves of Androzani heralded in a new Doctor. Or at least, so we thought at the time...
The Doctor
Much to his credit, Peter Davison, whether by design or accident, ended up underplaying the Doctor. For me, his mild mannered persona served to highlight his kindness. He was in a way, much more relateable than any Doctor before him. Now, some would say they don't want to relate to a 500+ year old Time Lord, but to me, it helps with audience engagement.
The best case for this is the final story, The Caves of Androzani. If Colin Baker's Doctor would have been in this story, he would have buggered off and left Perri to die! If Tom Baker's Doctor had been in it, he'd have swanned about, wise cracking jokes left, right and centre and come up trumps with very little consequence of feeling of danger. The fact that Peter Davison's Doctor was genuine and kind hearted, helped to sell the scenario and brought the tragedy of his death home in a way that woul have been impossible to do otherwise.
The fifth Doctor for me will remain one of my favourites and I think it's a crying shame we didn't get at least another season from him in the shape of the Twenty First. The possibilities would have been amazing. I will have to content myself with Big Finish for that.
Favourite Moment
As mentioned above the final scenes of The Caves of Androzani. The fact that this man, this Time Lord gives up his own life for a girl that he's only just met - not to save the universe, but to save one person. It is supremely powerful and sums up the Doctor's persona to a T.
Worst Moment
There are so many, but most of them are entire story's long. None particularly stand out over others, so I would say the worst for now would be the point in Time Flight when the Khalid is killed and looks dead with gunk and everything, only to be inexplicably revealed to be the Master. I mean, why go to all that length with the goop just to say "surprise!"?
Favourite Story
The Resurrection of the Daleks
Caves of Androzani comes in a very close second. This story I guess sneaks into number one because I grew up watching it again and again. I was captivated by all of it. The policemen with sub-machine guns, the terrifying voice of Davros, the ways that the Daleks are shown to be as ruthless as they always should be... It's just great even if it's a mess with all the plots
Worst Story
Time Flight
If it was hard to choose a best story, it is downright near impossible to pick a worst one. Peter Davison was seriously let down by the quality of stories that he was given. A few of them, as is the case with Time Flight actually, were okay on paper, but the realities of constrained budgets and time meant that the realisation of them was truly god awful. I shudder at the thought of ever having to watch this story again and with the grace of god, I won't ever get the feeling to.
Favourite Companion
Nyssa
Nyssa is my favourite. She sparks memories of Liz Shaw to me, and whilst there was always a danger of having a "smart" companion on board the TARDIS, Nyssa was always pitched at just the right level. She was smart, but never left the viewer behind. She was kind and thoughtful and cared about the people around her. It's just a shame that they picked such an awful story for her to go out on - she deserved a better ending.
Worst Companion
Kamelion
Aha! You thought I'd pick Adric didn't you? Well, as whiny and spoiled as he was, we did get to see glimpses of how great it would have been to have him when he was alone with the Doctor in Keeper of Trakken. Plus, we got a great ending when he was written out of the show.
Alas, Kamelion the malfunctioning robot was as pointless as he was irritating. From the very start it was an ill conceived attempt to bring in a strange new companion after the flop of K9 and Company (which coincidentally, I liked, but so did JN-T).
The robot never worked and was quickly abandoned in a storage cupboard onboard the TARDIS until it was time to write him out again. Everything about him is just redundant and even if it had worked exactly like it should have done, my guess is that it would have been as overpowered as K9 ever was and would have been abandoned anyway.