And I love the show, but its primarily due to the relationship between the two leads. Its the strongest brother relationship I have ever watched on tv, and one of the things they almost always get right, even in crappy episodes.
Eh, as someone with several brothers I just can't agree with this. They milked the angst so much that it's complete overkill and like I said, I basically quit watching because I just couldn't deal with it anymore.
Well and then there is my 2nd major complaint. The main plot for seasons 4 and 5. I don't mind the plot as much as I didn't like Sam and Dean's role in that plot. If they were just a piece of the story, or a background characters instead of... what they were... then I think I would've liked it more.
I wish the show had stayed more episodic as in seasons 1 and 2 and not went in the plot directions it chose to go in latter seasons.