I remember this series as a kid, but I appreciate it a lot more now than I did then. The series as a whole is absolutely amazing. The movies are okay, but they don't come anywhere close to the brilliance of the original series. The stories were well written, imaginative and well acted by all the players. It's also fascinating to see the list of guest stars that appeared on the series, like Ed Asner, Tom Bosley, Tyne Daly, William Shatner etc.
Looking forward to the last season with a heavy heart, and I do hope that they include some special features, like behind the scenes footage, outtakes or cast interviews.