Some of the words that stick in my memory best are nouns that are either surprisingly just like the English or , conversely, completely different from the English. For example:
洗腦: brainwash... literally "wash brain"
or
水母: jellyfish... literally "water mother"
Water mother? I learned this word going on 5 years ago when I was first starting to learn, and still remember it, even when I go for ages without hearing it, simply because it's so weird. (It helps that I'm terrified of the decidedly unmotherly jellyfish!)
So I'm wondering, does anyone know any other good examples of memorable words? There are some obvious English-y ones, like 熱狗 (hot dog) or 桌球 (table tennis), and amusing ones like 吸管 (suck pipe!), but are there any lesser-known ones out there?