You know, I don't get all the Clara hate. She wasn't my favorite companion or anything, and I'll even grant that she overstayed her welcome by at least a series (probably closer to 2 series'), but I'd still happily take her over Bill "Did you know I'm a lesbian?" Potts, Martha "Why don't you love me?" Jones, or especially Rose "Queen chav bitch of the universe" Tyler.
Nope, I have a soft spot for her as well. I think it started to go off the rails when Danny entered. Even then, when she wasn't getting bogged down in school stuff or relationship stuff, there were still good moments with her. Honestly, aside from being the easiest on the eye companion since Martha (subjective tastes, but both really did it for me), I really liked her character and how fun she was. Smart, too - I really liked that. The Christmas Episode where we first met her properly was a really good episode, I thought. It had a whipcrack script, great villain (who doesn't like Richard E. Grant and they even gave an origin story for the Great Intelligence), fun supporting cast in Strax, Vastra, Jenny. Yes, it's mostly a lighter episode as Christmas ones usually are but it still makes me chuckle. Clara is genuinely intelligent in it. Not wibbly-wobbly technospeak clever, but actually. Little games like her working out why the Doctor has brought them onto the roof and his delight in meeting someone again who challenges him and, well, plays with him. Matt and Jenna had great chemistry. I'm pretty certain at the end of one episode when he's polishing the TARDIS's console with a chamois leather and she's bending over it, he thwaks her on the bottom with it as he walks by. Her face is... playful.
Yeah, I'm not going to apologise for liking Clara. She was what was needed after how heavy the Amy Pond arc got. A return to fun, delight and interesting one-off stories and she was a great character to do that. If they saddled her with some overly heavy dragged out plotting and forced her into an unnecessary messiah arc the actress still did her best to make the character engaging.
To Hell with it, I'm going to go full Sperg and give you my favourite companions here. In no particular order but limiting it only to the ones I really like:
Jamie and Victoria. Technically two companions but I always think of them together. Their interactions were fantastic.
Fred. Or Romanadovoratrelundar to you. Specifically Romana I. Whilst Lalla Ward's Romana was pretty and still a great character, Mary Tam had the best moments I felt and brought something really special to the role. I think Tom Baker had a crush on Lalla Ward as well or at least I got that sense. Which slightly changed the dynamic with the Doctor being subtly deferential to her. Whereas with Tamm's Romana there was this constant low-grade power play which I loved.
I'd love to show a clip of her here but the BBC is really aggressive about taking down clips and she's not as famous as NuWho companions so it's hard to find one that isn't just photos covered with music.
Donna Noble. Probably the most love her or hate her one on my list but I think Catherine Tate was hilarious in her run. You had fantastic episodes like Midnight (admittedly she wasn't in that) or Partners in Crime and Silence in the Library / Forest of the Dead.
Clara Oswald. Don't care! Like her even if they did bog her down from Capaldi's entrance onwards. She's a good actress and was a fun partner to Matt Smith. And she could do emotion well when asked. Cold War was a great, Classic style Doctor Who episode and it would not be the same without her. The Crimson Horror is again a brilliant classic Who episode. People like how Donna came without all the baggage and drama of Martha or Rose. But Clara did the same - she treated the Doctor well as a friend and companion.
Adric. No, just kidding. Had you for a moment there, didn't I?
Liz Shaw. Companion to the Third Doctor. Eventually left off-screen because the Doctor "just wanted someone to hand him his test-tubes and tell him how brilliant he was". Liked her loads.
Honorable Mentions:
- Martha Jones. Let's be honest here, I fancied the pants off her. I also thought Freema Agyeman was a good actress and liked the character as a person. Got saddled with some bad lines and heavy plotting.
- Rory's Dad. Not really a companion exactly, but liked him in Dinosaurs on a Spaceship and him looking down on Earth at the end was beautiful. Would have been a hilarious change of tempo if he'd stayed on for a few episodes.
- Nardole. The best thing in a bad run. (Barring the Missy and the Master). It's funny because I never liked Matt Lucas in any comedy thing I ever saw him in but he was quite endearing in this. He should try being unfunny more often, he can actually act a bit.
- Mel Bush. But strictly and only on the Big Finish audios where somehow she's not annoying.
- Nyssa. A rather po-faced character but the actress was a lovely person and stripped down to her nightie in her last episode to "treat the fans".