There are bike lights that are designed to ensure that you make it home alright and then there are the lights from MonkeyLectric, which are LED lights that mount to the spokes. This will ensure that you are seen by cars after dark, but with a bit of fun as well. These lights can be programmed with 42 patterns that are sure to be noticed.
httpv://www.youtube.com/watch?v=yLbPllja9dI&feature=share&list=UU1LXo4wdXXoRJnyaOj0Rpvg