Hey, have you heard the N.Y. Knicks have this point guard of Asian descent that's been playing pretty well for six or seven games? Of course you have. You can't escape Jeremy Lin and Linsanity. The level of media coverage of him is so over-the-top it's laughable, but it's not the first time we've gone down this road. Here are some of the most overhyped sports stories in recent memory.