I watched the first four episodes of Battlestar Galactica 1978 (the three parts of the first movie and the first part of the second episode).
I remember watching these live (barely) and have seen them in syndication a couple of times. My viewing companion was born after they aired and found them to be dated, both in terms of special effects (the show was canceled because the special effects were so EXPENSIVE, but that was a long time ago) and in acting style.
As for me, certainly a more realistic style of writing and acting has come about in the last, ahem, *35 years*, but that usually doesn't bother me. What did bother me was the multiple-Mack-truck size holes in every aspect of the plot and the science behind the show. I think they started out to make a work of epic scope that would fully hold together but simply didn't have the budget, time, writers or, uh, knowledge to make it happen.
I still love ye, BG '78, but I'm not sure how much of that is nostalgia vs. any inherent quality of the show. Those of you who are old timers on this site know I have almost identical feelings about a certain band that also peaked in 1978 (now owners AND namesakes of an AFL franchise!).