Igor Sergeev most probably has the world's largest collection of unopened cigarette packs. He has been collecting them since 1976 and currently has more than 16,000 cigarette packs. He posted photos of more than 5,000 cigarette packs on his website. You can view some of the common ones like Marlboro and Davidoff and even strange brands like Bali Star, Zorro and Dove. Looking at them makes me want to light up and puff.