Dexter was great, set a good vibe that matched the shows tone.
Game of thrones was just really well done with good music.
Buffy. Great high energy start, especially after the explanation intro. Goes straight to action
Lost, its short but it was atmospheric, cryptic and the reason it's short is they wanted to use the time for more story, as the ad levels had increased tv wide so on broadcast tv it was a nice non monetary move from that show specifically.
Firefly. Not enough episodes to get sick of it.
Friends, but only a few times no skip, if its binged.
Battlestar Galactica. Gives a few hints of what's to come in the episode, without being spoilers.
Bluey is fun, kids love it and dance to it.
Thundercats, duck tales, gummi bears, chip n dale. They make me nostalgic for childhood, when you couldn't skip.
Edit:typos