Currytown is where I've been getting my Saturday curry fix for the last two weeks and their buffet is great. For 15,000 won you get samosas as big as a baby's fist (mmmm...baby...), nice tandoori, a variety of curries, and chai.
It's got a rustic look to it. It reminds me of the Indian places that I used to go to in college. PLUS, they play Bollywood on a big TV.
Directions: Itaewon exit 1. Up the alley across from Outback Steakhouse.