I love adventure/fantasy shows, but I much prefer a long story-arc like BG, 24--or even the ridiculously byzantine Lost. These days we have Netflix so it's easier to keep track.
But I pine for a remake of the 90's Lois and Clark--best TV romance series, ever. Like I Love Lucy, Moonlighting and Superman, all rolled up into one.
My friends and I used to have a no-talking-during-Lost rule, but eventually we gave up caring about the plot and just watched it for the sake of discussing the relative merits of the various male characters. Fortunately, just as Lost was twisting its plot into oblivion, NBC came up with Heroes, and that’s now my long-story-arc-action-adventure-show.