I think the show was perhaps at its absolute best between Seasons 3 and 8 perhaps, but my favorite season overall is a toss up between Season 5 and 6. I voted for Season 6.
I took a break for a while now I am back to continue rewatching Season 8 (DVD). These are the things I found boring so I fast forward a lot.
1. Eddie and Lucy story
2. Jenna, the trial and Bobby playing detective to help her
3. Pam searching for Mark
4. Mandy and JR
5. Donna Reed as Miss Ellie, I felt she was stiff in a lot of scenes, her facial expressions were horrible and she did not connect with the other actors.
6. Sue Ellen and Jaime's relationship
7. JR cheating on Sue Ellen for the umpteen time.
The only things I really liked were
1. Pam and Bobby reconnecting and Pam, Christopher and Bobby's scenes as a family.
2. The battle over the whether Jason Ewing and Digger Barnes had a share in Ewing Oil. The writers had a great opportunity to really make this a full on battle and give JR something to really quiver about in his leather boots but they botched it.
3. Mandy and Cliff (I liked these two as a couple wished the writers had made their relationship more deep and had them truly fall in love with each other.
I wasn't too fond of Pam's search for Mark or Jenna's trial, either. I haven't been too keen on Jenna past Season 7, for that matter.
Almost all of Lucy's storylines I could take or leave, although I personally think her story with Eddie was one of the better ones revolving around her.
I actually liked Mandy and J.R., and Mandy and Cliff, too. I thought Mandy was a good "object" to be placed between Cliff and J.R.
I personally liked Donna Reed as Miss Ellie (although I seem to be in the minority on this). I didn't particularly miss Barbara Bel Geddes during her absence. This isn't to say that Bel Geddes didn't do good work (she most certainly did), but I think the storylines surrounding Miss Ellie in Season 8 (per DVD count) worked well with Reed in the role. She wasn't doing too much as the season went on, some say that's because of Reed, but I honestly don't think that was the reason. Most of the later-season stories that year were centered on Jenna and Pam. Miss Ellie was left out. I've watched a bit of Season 9, and even though Bel Geddes is back this go around, she isn't do too much, either.
Yeah, I wasn't too crazy about Sue Ellen becoming obsessive in wanting to be Jamie's buddy. Also, I think Jenilee Harrison (who isn't the world's greatest actress) has something to do with my dislike of that story. Harrison was okay on
Three's Company, but she seems out of place in
Dallas.
I did like the Jason Ewing/Digger Barnes story... and Jack coming in near the end of the season. Great!