Additional Study Information: This study is for patients with the following cancers: advanced non-small cell lung cancer, head and neck cancer, melanoma, colon cancer, or bladder cancer. The purpose of this study is to find out more about the effects of AMG 228 in people and on their cancer. AMG 228 is an experimental drug that is being developed to stimulate the bodys immune system to kill cancer cells. This study is the first totest AMG 228 in people. This study will look at what doses of AMG 228 are safe for people totake and whether it causes any side effects. The first group of patients will receive a lower dose and then, if the drug is well tolerated, additional groups of patients will receive the medicine at a higher dose.