The second Doctor whose whole run I completed, and the only Doctor I hate. This is going to be brutal
Rating his serials in categories
Good:
Battlefield
Delta and the Bannermen
Meh:
Silver Nemesis
Survival
Bad:
Paradise Towers
Dragonfire
Remembrance of the Daleks
The Happiness Patrol
Terrible:
Time and the Rani
The Greatest Show in the Galaxy (This is also my most hated Doctor Who story in the entire franchise)
Ghost Light
The Curse of Fenric
A Doctor with potential, ruined by a late decision to turn him into basically The Master. If he'd stayed the eccentric, spoon playing guy who mixed up his metaphors, he could have been really good, especially with Ace. Instead, he became the most uncaring, vicious bastard The Doctor has ever been (and I'll even include the War Doctor in that, although he don't know a lot about what he did). The only reason three of his later serials are on my good/ok lists are because one had the brigadier to help the episode, one had Anthony Ainley and the other wasn't amazing, but at least it wasn't focused on torturing Ace.
Ace was a great companion, but she had the worst Doctor ever. I've never seen The Doctor mentally torture a companion before, and it was freaky to see it. Heck, she wasn't even a random choice. He (for some reason that I don't remember, but I'm sure was horrible) shot her into space himself (I guess while Mel was sleeping

) just so he could find her and basically manipulate her into being his companion. The end result of his torture/experiments? She's probably still afraid of clowns, she knows a house she thought was haunted
was basically haunted, and her mother was, yes, a baby at one time, although it doesn't means she wasn't still a horrible mother.
Overall, I think McCoy was a good actor and could have played a great Doctor, if he'd gotten to stay the eccentric and jovial Doctor from his early run. As it is, he suffered from having bad stories written by mostly bad writers and had a mediocre person in charge (Andrew Cartmel sucked, and I'm glad his idiotic masterplan was never on TV, and that NuWho completely ignored the stupid books that followed the plan and firmly went against the whole idea).