Here are some of my favorite Google Maps Mash-ups for this week:

A World of Nirvana! This is awesome! Combining YouTube videos and Google Maps, you can revisit the journey of Nirvana from 1987 to 1994.

Who Is Sick - Keep track of colds, the flu, and other ailments in your city. This came in handy, since I caught a cold this week. I thought I was the only weirdo with a cold in Spring. As it turns out, there are other weirdos with colds in Spring.

Health Map - The common cold can be a little boring. Here’s a map keeping track of diseases, globally. I no longer feel weird about my cold in spring. I mean, I could have Dysentery in Spring. (Not safe for hypochondriacs)

Hotspotr - Find wi-fi hotspots in your area. You can view rate each listing for things such as wireless quality, food, outlet availability, etc.

US Incident Map - This map displays recent incidents involving police, highway patrol, etc. You can view right down to your local zip.