My UOs:
I don't think Bobby was all that and a bag of chips. He was good in the first few seasons where he was used sparingly, but after S4 he turned into the Fount of All Knowledge. I like it better when the boys figured things out on their own. I really started disliking him in S5 when he blamed Sam for killing Lillith and starting the apocalypse when two episodes earlier he wanted to let Sam out of the panic room, feed him demon blood and sic him on Lillith. Hypocrisy much?
I like the Ghostfacers.
No matter how much the sideline Sam, or tell me he's a screw up, I still think he's a hero.
Never could stand Ellen. She was a shrieking harpy to Sam and Dean, especially Dean, in S2, and she must have been the one who ratted Sam's powers out to Gordon.
Cas should have stayed dead in S4. He's long outlived his usefulness. He's either superpowered which makes the boys superfluous and removes any dramatic tension, or he's mortal and a hindrance to the boys. I also don't see the 'profound bond'. Cas has beaten the crap out of Dean more than once, and Dean seems to regard him as a useful tool at best. Dean unceremoniously booting a newly-mortal Cas out of the bunker with nothing but the clothes on his back, not even a phony credit card or fake ID, pretty much proves my point. And that's not even going into the whole, 'lying to the boys all S4, and letting Sam out of the panic room, then blaming the Winchesters for the apocalypse' thing.
I used to like Dean a lot, but he's been going downhill since S4. Between the pity-parties, boozing, mind-wiping, rage outbursts, and general hypocrisy, I've come to dislike him. I've been watching for Sam and the side characters.
I don't hate Garth or Charlie.