Mine is 6. I'm not exactly sure why. I was not a big fan of Kelso's and The Janitor's stories. Plus, there was all that Kim stuff...too much, I think.

The 3rd is my second least favorite. Too much Sean.

It's so hard choosing, it's like picking out of my beautiful, single-camera babies. I want to pick them all up and cradle them, like a mother yak supporting a Statue of Liberty hat, but I must 'cuss' one! Oh dear!

Well, I've chosen:
Season 4 felt lost at times. I think demolishing the relationship between JD an Elliot, the core of the whole show, left the writers wandering, so they had to keep on introducing guest stars. I think it's a consistently good season, but it's not great.