Excellent Sat Imagery Source: MODIS

MODIS Rapid Response System

Everything about this site and the imagery it offers is really astounding. It has satellite imagery that focuses on natural disasters and weather events.

A very neat element is that each image has an accompanying world file so that it can be easily incorporated into your own mapping applications.

If you are looking for HUGE, satellite wallpaper for 4 monitors...the 250m images would be a great choice for browsing. (they are simply gi-normous).

The gallery is a great place for browsing...so much detail.

The MODIS Rapid Response system has been developed to provide rapid access to MODIS data globally, with initial emphasis on 250m color composite imagery and active fire data.