I couldn't stand TNG at first, and in fact didn't really watch it until a decade ago. To me the first 2 seasons, and pretty much anything involving the Q character, are unwatchable, but once I learned to skip them the rest became really interesting. For the sake of comparison, I loved the old TOS movies, DS9, and liked Voyager as a purely episodic "watch whenever I catch it" show.

Babylon 5 still lords over all of them.