I think the high-concept pitch of Lost was probably "scripted Survivor". That probably does as good a job of describing it as you could do in two words, but it's soooooo much better than that. If you liked The Prisoner and Lord of the Flies, plus a little (more?) science fiction (and maybe the occasional odd comic book reference) you'll love Lost. It's well-acted, well-directed, and well-scripted, not to mention beautiful to look at, what with the Hawaiian rain forest location (not to mention Evangeline Lilly, Emilie de Ravin, Maggie Grace, and Yunjin Kim -- or Matthew Fox, Naveen Andrews, and Josh Holloway if you're a woman or gay).