Pleural effusions are common and associated with high morbidity and mortality. Whereas thoracentesis can assist in achieving a diagnosis or therapy, advances in education and in the technique may prevent morbidity associated with the procedure. Medical thoracoscopy is often useful for undiagnosed effusions, as well as for therapeutic purposes. There is much enthusiasm about techniques for biopsies that extend beyond forceps. These include biopsies using a diathermic knife as well as cryoprobes. Similarly, adhesiolysis or other techniques to improve therapy in multiloculated effusions using medical thoracoscopy are contested. This review attempts to synthesize recent advances and controversies in thoracentesis and medical thoracoscopy as clinicians head into the next decade of treatment.