Yeah Season 8 really was the last great season but since then they always have that one great episode
Season 9 - Trapped in the Closet
Season 10 - ManBearPig
Season 11 - Le Petit Tourette
Season 12 - The China Probrem
Season 13 - (was great from start to finish)
Season 14 - It's a Jersey Thing
More good episodes in each season than those, like:
Season 9 - Marjorine, Ginger kids, Die Hippy Die
Season 10 - Cartoon wars part 1 and 2, Tsst, Make Love not Warcraft, Miss Teacher Bagns a Boy, Hell on Earth 2006
Season 11 - Cartman sucks, More Crap, Night of the Living Homeless, The Snuke
Season 12 - Over Logging, Breast Cancer Show Ever, Ek a Penis!
Season 13 - This season is pure win
Season 14 - Medicinal Fried Chicken, The Tale of Scrotie McBoogerballs, Poor and Stupid, You have 0 Friends
Man, if you really look up the seasons, there's a lot more good episodes than I remember per season.
Oh, btw, here's my birds just relaxing together. I don't think I've posted a picture of my new one (the one on the right).