I'm a big fan of a Sci-Fi channel cable show, SG-1, because: 1) it's not a Star Trek rehash, 2) has quite a few great and original story lines, 3) with rich subplots and more (e.g. Richard Dean Anderson of MacGyver fame does a great job as one of the main characters). It has garnered a loyal fan base, and is now on its 8th, and last, season.
My fiance and I saw the 1st episode of the new season last night - it totally rocked, that is, if you're a fan of [good] sci-fi. :)