I have been there probably a dozen times. Usually visiting Samsung (and once or twice LG). Love Kimchee and Korean pickles/side dishes. What did you find awesome Bruce? I never took the time to look around. Just business trips and one or two day stays....
The country is rich in culture from all the way North to the DMZ to the southern most tip where I went rappelling on Cheju Do island. Seoul has the Gyeongbokgung temple, the Seodaemun prison, eat at the top of the Namsan tower, the COEX Mall and aquarium... even the Kimchi museum! All that is just in Seoul. It's becoming more westernized now with your typical western fast food restaurants. When I was there the exchange rate was pretty good. The best thing is that I could stock up on my vinyl collection!