Is your morning commute just a dark and depressing trip down a gloomy road to hopelessness? Wouldn't it be great to have just a little bit of sunshine in your ordinarily humdrum morning? Riders on a New Jersey bus were recently serenaded by a jolly man singing along to Katy Perry's "California Gurls." We're not sure which takes more guts; belting out your favorite song on a bus or being seen in public with a Discman.