There are two movie theaters in Suncheon: Primus and Lotte. Primus Cinema (프리머스시네마) is next door to Suncheon City Hall in Jakcheon-dong, and is attached to the area known as "Old Downtown" by a fancy, newly-constructed pedestrian street. Apparently it was the former location of 맘모스극장. Anyway, this Primus Cinema opened on December 18, 2003, has 8 screens, and has a Lotteria on the ground floor. You can see what's playing now on their website. It is accessible via a ton of buses---188.8.131.52.184.108.40.206.220.127.116.11---and it's roughly 10 minutes behind the Intercity Bus Terminal on foot, and about five minutes from the bright, crowded Old Downtown shopping area. It's the tallest building in the area, and is easy to find after dark because there are multi-colored lights ringing the top.
Lotte Cinema (롯데시네마) is basically across the street from the
There are a few other theaters in Suncheon that aren't operational any longer. I've tried to get information on them, to the best of my ability, but haven't been able to find much. One is the old 국도극장, in Old Downtown. The building itself is still there, and is next to the Lotteria, partially obscured by an abandoned clothing store. The ticket window is still there, and at the time of the theater's closing, general admission prices were 5,500 won. Another is 황금극장, also in Old Downtown, in a presently vacant building. According to the guy on Naver, there were two screens there. I've found references to a few others---순천시네마극장, K2 시네마, and 코리아극장---but my Korean isn't good enough to figure out where they are/were.
[Edit (12/04/07): I just put up a little post about 국도극장, in "Old Downtown."]