Follow the Sun
http://www-istp.gsfc.nasa.gov/sun/

Space Weather Now
http://www.sec.noaa.gov/SWN/

SOHO Real-Time Solar Screen Saver (look under "free stuff")
http://sohowww.nascom.nasa.gov/

ISTP Real-Time Monitoring Page
http://www-istp.gsfc.nasa.gov/istp/events/monitor/

SHINE - Latest Solar Observations
http://sprg.ssl.berkeley.edu/shine/suntoday.html

Solar Cycle Progression
http://www.sel.noaa.gov/SolarCycle/

Space Physics and Aeronomy Online Open House
http://www.windows.ucar.edu/openhouse/open_house.html

Windows to the Universe
http://www.windows.ucar.edu/spaceweather/index.html