I'm not entirely sure, I've never looked into those. But there's Boys over Flowers, which is based off the manga, as well as Absolute Boyfriend, Hana Kimi, Antique Bakery (which I never read the manga for but the movie was interesting), Coffee Prince, and a ton more. Basically if something is very popular they'll try to make a drama of it. And the countries like to compete too: Boys over flowers (Korean), was made to better the Japanese and Taiwanese versions on visuals (they have some pretty hot guys in it. ^_^), while the Taiwanese version sticks a bit closer to the actual storyline and the Japanese version covers a lot more of the manga's plot (or so I've heard. Haven't gotten to watch that one yet.) The dramas are (well, depending on the country) about 1 hr long episodes that have anywhere from 14 to 23 episodes a season, which means I've spent my lazy days off watching 4 or more episodes in one sitting and then stopping to get some food.
But just judge for yourself. asianrice.tv is a great place to find them, so just watch the first 10 min or so of Boys over flowers (korean) and see how you like it.