Given the importance of providing adequate analgesia in VATS lobectomy and wedge resections and lack of consensus amongst surgeons and anesthesiologists for the optimal analgesic technique, the investigators are proposing a prospective observational study to examine the analgesic efficacy of the ESP block in VATS lobectomy or wedge resections as a potential alternative to TEA, PVB and intercostal blocks. The investigators are hoping the results of this study will provide framework for future larger comparative studies.