http://www.peakware.com/encyclopedia/peaks/routes/rainier.htm
This is a nice list of the 10 most popular summit routes on Rainier, with a brief description of each, rating, and estimated climbing time.

http://reservations.nps.gov/search.cfm
Do you want to make an on-line reservation for Cougar Rock Campground a few miles from Paradise? Go to this page and select Mount Rainier National Park from the pull down menu.!

http://www.seawfo.noaa.gov/data/forecasts/00latest.SEASABNW
Avalanche Forecasts on Rainier. This page is updated during the active season, winter and spring mostly.

http://wwwb.tribnet.com/news/local/avalanche/slam.htp
I know you don't want to focus on tragedy, but this page has an excellent picture of the Disappointment Cleaver as it splits the Ingraham and Emmons. It shows where the ice fall risk is, and the area where the serac broke while our team was traversing towards the cleaver.

http://mt.rainier.tribnet.com/field_guide/fg_7.asp
This is a very interesting page of many, many, many obscure facts about Rainier. Definitely worth a quick scan...

http://www.geophys.washington.edu/SEIS/PNSN/RAINIER/rainrec_eqs.html
Okay, don't panic, but here is a list of all of the recent earthquakes recorded on Mt. Rainier along with a map of the epicenters.

http://vulcan.wr.usgs.gov/Volcanoes/Rainier/
So what would happen if Mt. Rainier blew its top? USGS gives you the answer at this website and every other seismic piece of information you might want. This is a great site for hard core "data"

http://www.lexicomm.com/climbing/index.html
A good all around climbing bulletin board