re: Best TV/Movie brothers/sisters

I will echo the OP. Sam and Dean are one of the better portrayals of siblings on TV.

I will add some of my own:

1. Hank and Steph Dalworth on Terriers (portrayed by real-life brother and sister Donal and Karina Logue) were pretty wonderful and it is a damn shame we didn't get to see a second season of this show to see how they were doing. As is, it remains one of the best treatments of mental illness on a TV show.



2. Stefan and Damon Salvatore on Vampire Diaries have no business being as entertaining as they are together (much like the show itself). Stephan in most of his interactions with other characters on the show is pretty wooden but any scenes with the brothers together just pop off the screen. A large part of this has to do with Ian Somerhalder being really, really good (he along with Caroline Forbes,the sweetest creature of the night ever, make the show for me) but the emotional heart of that show has really become their relationship with one another rather than either of their respective relationships with the lead.



3. Tim and Billy Riggins on Friday Night Lights were awesome and rather remarkable as Billy Riggins was not much of a regular until late in the show's run but I would say after Couch and Mrs. Couch got the most poignant and memorable scene in the show's finale.



Honorable mentions:

1. River and Simon Tam (Firefly): River was awesome but Simon was the only not great character on Firefly



2. Buffy and Dawn Summers (Buffy): Dawn kind of sucked but I included them for the finale of Season 5.



3. Lindsay and Sam Weir (Freaks and Geeks): given how great these characters are you would think they would have a great relationship but by and large they more or less moved in different circles.



4. Lee and Zack Adama (BSG): remarkable in the Zack is dead a buried long before the events of the TV series and only ever shows up in flashbacks but is the central relationship of Lee's as well as Kara's lives.