I remember when "Unification" first aired in 1991, it was like a major Trek event. I saw it again for the first time in many years about three years ago on TV, and the one thought I had at the end of part two was... that was really a crappy episode. Evil Sela. The completely ridiculous Romulan "invasion plan." The padded first half with a musical number.
There were some good scenes. The scene with Picard and Sarek. The announcement of Sarek's death actually caught me off-guard. The scene with Spock and Data talking to each other. But other than that, it was pretty damn boring. Hardly the major earth-shattering event I'd thought it was back in the day.