What are some things that you should take to South Korea?

Of course I am going to take bathroom products, clothes and a couple of books but what is something I can't leave without? They say deodorant is extremely expensive so I will take probably 20 tubes. Can you buy electronics there that use the English language like a cell phone or computer. Would region 1 dvds not work on their dvd players? I think the max I can take on an airplane is 60 lbs worth of stuff so what should I lean down on and what should I take plenty of? Thanks. Ho chi ling, wa chi ka kung pao.

I think a map of Korea (and a particular city or town you'll be in) would be helpful as well. You can look through it and have it with you as soon as you arrive in Korea. You can also bring some snacks if you're not into liking of Korean food in the beginning. I think there should be international cellular services and electronics such as cellphones should be compact with English menus. Korea has very fine electronics. (fyi, there a quite number of English speakers in Korea. I heard some people just try to start up conversations in order to practice their English.) Anyway, I think Region 1 dvds would only work in the USA, Canada, and U.S. Territories. Region 3 dvds work in Southeast Asia including Korea, Hong Kong, and Taiwan. (fyi, Region 0 or All Region dvds are compatible everywhere as long as they're played in their specific units.) Bringing your own laptop might help and it can be more convenient. gl.. (just a little experience/knowledge) People who fly there often can help you even more adequately.

sorry, but I couldn't help to notice and would like to add that since I visited Korea, I now use smaller towels. Those 'regular-sized' towels seem too big for me now and you can get used to using smaller towels. (less to wash at least) your choice when you get there. ^^;

a Korean/English dictionary

You're right about the deoderant.

The Korean-English dictionary is better and cheaper in Korea.

You can buy maps in English of Korea here in Korea as well. Just go to this giant Barnes&Nobles-type chain store called "Kyobo" bookstore. They have a sizable English section.

Here in Korea, my friends and I have purchased cell phones, xbox360, ps2, ipods and other types of really cool mp3 players, and a macbook laptop: all of which are available with English interfaces. The Yongsan area in Seoul is the best place to find that kind of stuff pretty cheap (150 for a modded Wii).

BEDSHEETS!! They are expensive and difficult to find here.
I usually bring toothpaste and hard/medium bristle toothbrushes. Shampoo is weird and expensive here too, so I bring plenty of that also. Lotion is a must, especially in the winter. If you're not into eating rice and kimchi everyday, I suggest you bring some dried meals like lipton noodle soup packages and tuna helper. Mac and cheese is also a fav. we bring back from the states. A regular-sized towel is also important because most Koreans use these mini-hand towels for the shower.

For your toiletries, definitely lots of deodorant (because it's hard to find) and toothpaste (because Korean toothpaste just isn't very good). I'd bring extra shoes too, it's hard to find larger sizes if you have big feet. You can get English menu cell phones here, so don't worry about that. You can also get a computer here but I had to install an English language operating system myself. They might sell some with English operating systems too.
Bring your DVDs too. You can buy a "Region Free" DVD player in Korea for about 60,000 won. It will play any region DVDs, MPEG4, MP3, JPEG and you can connect USB (so you can download movies and watch them on your TV. It will play damn near anything you put in it. Electronic stores don't carry them anymore (in Busan at least) claiming that they are illegal. But you can still buy them online.
I'd also recommend a Korea Lonely Planet travel guide and a few magazines and condoms.

Is this a visit or a move? If it is a visit, bring enough of your brand of smokes to last the trip. If it is a move you might as well just get used to This brand.
You should be able to check two 50 lbs bags and carry on 1 small bag (back pack) and one personal bag (diaper bag, camera case, man purse).
Honestly, I would bring whatever book or two you could read fifty times without getting bored and personal clothes. DVDs may or may not work depending on the player you buy. Some of the rental places I used when I was in college in Seoul had universal area DVDs. You can find English software either for sale, pirated, or buy it from the web and download.
You can get your cell phone here.
I would make sure my hard drive or MP3 was loaded with my songs that I couldn't live without.
After that... just come and use the Korean stuff. Part of the adventure of being here is figuring it all out.
Of course, I shop in American stores and have all the exact same household products that I use in the states, so it is a bit prickish of me to tell you to embrace the culture.
meh.