The following criteria is provided for health care professionals.

Inclusion Criteria:

• Patients with advanced or metastatic cancer that is refractory to standard therapy, relapsed after standard therapy, or have no standard therapy that induces a complete response of at least 10% or improves survival by at least three months; in addition, patients with disease that are "benign" by pathology, but relentlessly progressive, leading to disability, pain, and premature death in the majority of cases (including, but not limited to lymphangioleiomyomatosis [LAM], type 2 neurofibromatosis [NF], Erdheim Chester disease, and Castleman's disease) may also be considered for enrollment
• Patients should be at least four weeks from the last day of therapeutic radiation or cytotoxic chemotherapy or from antibody therapy, or at least five half-lives from non-cytotoxic targeted or biologic therapy; patients may have received palliative radiation immediately before (or during) treatment provided radiation is not to the only target lesion available
• Eastern Cooperative Oncology Group (ECOG) performance status =< 2
• Karnofsky >= 60%
• Lansky performance status of >= 60% for participants 16 years old or younger
• Absolute neutrophil count >= 1,000/mL
• Platelets >= 50,000/mL
• Creatinine =< 3 X upper limit of normal (ULN)
• Total bilirubin =< 3.0
• Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 5 X ULN
• Fasting level of total cholesterol of no more than 350 mg/dL
• Triglyceride level of no more than 400 mg/dL
• Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry, for the duration of study participation, and for 90 days after the last dose
• Ability to understand and the willingness to sign a written informed consent document
• Patients may not be receiving any other investigational agents and/or any other concurrent anticancer agents or therapies

Exclusion Criteria:

• Patients with clinically significant unexplained bleeding within 28 days prior to entering the study
• Uncontrolled systemic vascular hypertension (systolic blood pressure > 140 mmHg, diastolic blood pressure > 90 mmHg on medication)
• Patients with clinically significant cardiovascular disease: History of CVA (cerebrovascular accident) within 6 months, myocardial infarction or unstable angina within 6 months, unstable angina pectoris
• Pregnant or breast-feeding women
• History of hypersensitivity to bevacizumab, murine products, or any component of the formulation
• History of hypersensitivity to temsirolimus or its metabolites (including sirolimus), polysorbate 80, or to any component of the formulation
• History of hypersensitivity to cetuximab, murine products, or any component of the formulation
• Patients that are taking cytochrome P450 family 3, subfamily A, polypeptide 4 (CYP3A4) inducers and/or inhibitors; if a patient has a history of taking CYP3A4 inducers and/or inhibitors prior to enrollment on the protocol, it is strongly recommended that the patient stops the drug and waits at least 5 half-lives of said drug before initiating therapy on protocol
• Colorectal cancer patients with known v-Ki-ras2 Kirsten rat sarcoma viral oncogene homolog (KRAS) mutation (for the arm combining bevacizumab, temsirolimus and cetuximab)
• Patients who have had major surgery within 6 weeks of enrollment in the study