From Wikipedia:
Colorectal cancer
Colorectal cancer, also called colon cancer or large bowel cancer, includes cancerous growths in the colon, rectum and appendix. With 655,000 deaths worldwide per year, it is the third most common form of cancer and the second leading cause of cancer-related death in the Western world.[1] Many colorectal cancers are thought to arise from adenomatous polyps in the colon. These mushroom-like growths are usually benign, but some may develop into cancer over time. The majority of the time, the diagnosis of localized colon cancer is through colonoscopy. Therapy is usually through surgery, which in many cases is followed by chemotherapy.
http://en.wikipedia.org/wiki/Colorectal_cancer
Also, if you're in the Waco area and would like to be screened for colon cancer, there is a free screening scheduled for March 21 from 8:00 am to Noon at the Hillcrest Clinic, 7300 Bosque Blvd,Waco, TX. No registration or preparation is required. Call for information: 254-202-4262.
A very detailed site about the disease over at the National Cancer Insitute
http://www.cancer.gov/cancertopics/types/colon-and-rectal/
A booklet from the NCI
http://www.cancer.gov/cancertopics/wyntk/colon-and-rectal
RadiologyInfo takes a look at some of the treatment options
http://www.radiologyinfo.org/en/info.cfm?pg=colorect
MedlinePlus has a very comprehensive section. News, treatments, videos etc
http://www.nlm.nih.gov/medlineplus/colorectalcancer.html#cat57
Nation Institute of Health Senior Health site:
http://nihseniorhealth.gov/colorectalcancer/colorectalcancerdefined/01.html
A colon cancer information library (this is associated with a pharmaceutical)
http://www.meds.com/colon/colon.html
Medicare's page on the disease
http://www.medicare.gov/Health/ColonCancer.asp
The Mayo Clinic's page:
http://www.mayoclinic.com/health/colon-cancer/DS00035
A very detailed look over at EMedicineHealth
http://www.emedicinehealth.com/colon_cancer/article_em.htm
Personal website on colon polyps and colon cancer maintaine by a board certified gastroenterologist in California
http://personalweb.sunset.net/mansell/polyp.htm#Dukes%20Classification
Centers for Disease Control maintain a site:
http://www.cdc.gov/cancer/colorectal/
About.com has a large section devoted to the disease
http://coloncancer.about.com/
MedicineNet's section on colon cancer
http://www.medicinenet.com/colon_cancer/article.htm
American Cancer Society
http://www.cancer.org/docroot/CRI/CRI_2x.asp?sitearea=LRN&dt=10
Colon cancer survivor stories
http://www.cancer.org/docroot/FPS/cancerTypes/Colon_and_Rectum_Cancer.asp
Patient advocacy group
http://www.ccalliance.org/
The Susan Cohan Kasdas Colon Cancer Foundation
http://www.coloncancerfoundation.org/
Yahoo! Groups has many mailing lists devoted to colon cancer
http://health.dir.groups.yahoo.com/dir/Health___Wellness/Support/Disease...
CancerCompass has message boards available if you want to talk. Hover over the Message Boards link and then make your selection from the available boards
http://www.cancercompass.com/colon-cancer-information/living-with-colon-...
Blog For a Cure has a section devoted to the disease with several bloggers actively posting
http://www.blogforacure.com/frontend/weblogs/listing.php?type=Colon+and+...
YouTube has many, many videos available on the disease
http://www.youtube.com/results?search_type=&search_query=colon+cancer&aq=f
Some books available on Amazon:
American Cancer Society's Complete Guide to Colorectal Cancer
by American Cancer Society
American Cancer Society's Complete Guide to Colorectal Cancer
Understanding Colon Cancer (Paperback)
by A. Richard, M.D., F.A.C.P. Adrouny
Understanding Colon Cancer
Living With Colon Cancer: Beating the Odds (Paperback)
by Eliza Wood Livingston
Living With Colon Cancer: Beating the Odds
Positive Options for Colorectal Cancer: Self-Help and Treatment [ILLUSTRATED] (Paperback)
by Carol Ann Larson
Positive Options for Colorectal Cancer: Self-Help and Treatment
Be a Survivor: Colorectal Cancer Treatment Guide (Paperback)
by Vladimir Lange
Be a Survivor: Colorectal Cancer Treatment Guide
The Colon Cancer Survivors' Guide, Second Edition: Living Stronger, Longer (Paperback)
by Curtis Pesmen
The Colon Cancer Survivors' Guide, Second Edition: Living Stronger, Longer
Colon & Rectal Cancer: A Comprehensive Guide for Patients & Families (Hardcover)
by Lorraine Johnston
Colon & Rectal Cancer: A Comprehensive Guide for Patients & Families