I've been fascinated by Katakana ever since I started learning Japanese. When reading text, something written in Katakana always seems to me to be like having the trademark 'tm' symbol next to it.
It's always interesting to try to guess which foreign word the Katakana word came from. Here's a weird one:
I was in a video game arcade and i saw some katakana. I always try to sound out something when I see it so I read it out...
サ。。。。ム。。。。ラ。。。イ。。。。
サムライ!(samurai)
It's weird how language works. Is samurai a foreign word? Is it English? Today's Kanji is 侍, and one of the English translations is 'samurai'.
More on the topic though, why is it in Katakana? It's such a Japanese word... I've actually seen many native Japanese words written in Kata, usually outside of books: Cd covers, video game machines etc. And some words are used interchangeably... バカ (baka) is sometimes written in Kata, which always makes me giggle and think of the English word 'bugger'. What's the deal with Kata in these situations?