Nothing turns me on more than a pretty girl tied to a pole giggling like a japanese school girl as her body is expoited by flurry of feathers and prodding fingers
Spoiler: Tickle Torture lol
I especially love it in anime. The begging eyes, that plead for an end to their happy anguish. Not to mention that anything is possible through animation, which has led to some pretty crazy/awesome tickle-themed art. Tickling in anime and manga as I've noticed is pretty erotic sometimes, and I absolutely love it! It's an indefinite torture that leave no physical wounds!
Spoiler: The Navel nyhaaaaa!
In addition to having a tickling fetish, I also really love the female midriff and navel. I have no idea why, and it may seem a little strange (but I guess that's how fetishes are, right?), but whenever i see a belly button I get aroused. The hips are a favorite spot too. Most girls go nuts if they're tickled there
Spoiler: some Haruhi