My favorite one thus far:
The killer in the backseat.
Other than a select few popular ones though, I don't usually follow urban legends (both American ones or the local ones in Singapore). I know there's the "Vanishing Hitchhiker" that I mentioned in a recent post. There's the Bloody Mary and the Hookman, the Slender Man and the Big Toe (in the soup).
Singapore has a few fun ones regarding female ghost passengers and the Hungry Ghost Festival (kinda like an Asian version of
Halloween but with Chinese opera and burning paper money for the dead). The latter one, we get a lot of stories about dumb fools who break certain taboos like stepping on the ashes of the aforementioned money (or just kicking them), eating the offerings of the dead, or (a weird one) swimming at night. Thankfully, the period for the festival has passed (I think).
We also have a lot of stories about hauntings at military camp sites. More foolish youths who break taboos and disrespect the dead, ending up missing or turning up dead. The most popular version of this tale involves a young recruit who went missing before his body was found the following day, his stomach ruptured from his body's high temperature. His spirit was rumored to hang around the camp site ever since, with the folks building a third door in the bedroom so that he could "find his way out." A lot of folks in Singapore, particularly the more veteran soldiers, have a lot of respect for the dead. They take these stories very seriously, unlike the more skeptical westerners. No offense. I belong to the skeptical bunch myself anyway, having never seen a ghost before and raised on American cynicism.
But to be honest, Singapore's urban legends just aren't as fun as American ones. While a lot of our local legends deal with unrealistic spirits and ghosts, at least American tales deal with something more grounded like hitchhikers and serial killers, both very real threats you could find in the realm of the mortal. They're a lot scarier that way. Don't get me wrong, I would probably still dash away from dark corners and abandoned buildings at night for fear of potential spirits of vengeance (even if I'm skeptical, there's still that subconscious fear of the supernatural), but I think a lot more people have double-checked their backseats than give any credibility to the existence of ghosts.