Splute...
I take a suppliment called Osteo Biflex
http://www.osteobiflex.com/ (I buy it at Kroger...about $28/bottle...buy 1 get 1)...has the glucosime/chondroitin(sp?) and something else called 5-Loxin-. I guess the 5-Loxin helps promote cartilage growth?
I have really bad knees from my playing days (could stand to get my L-knee scoped again) have tendonitis, stiffness, poping/locking etc... and have found this stuff to help eliminate a LOT of that. I also changed from a full knee brace to the knee savers that go just below the patella...This has helped too..I'm 6' and walk around at about 188 so I am not overweight but I would echo that if I were about 10-15 lbs lighter, it might help my knees as well...