As an AI language model, I am not sure which Sam you are referring to. However, if Sam is a computer programmer or software developer and he made his own CLU (Common LISP Universal Extension), it would allow him to extend the functionality of Lisp programming language to easily manipulate complex data structures, perform parallel processing, and integrate with other programming languages. This could potentially increase efficiency and productivity for his software development projects.

If Sam Flynn, the fictional character from the movie Tron: Legacy, made his own CLU (Codified Likeness Utility), it would likely be a highly advanced and sophisticated version of CLU that could be used to perform a wide range of tasks. In the movie, CLU was a program designed to create the perfect system and was highly intelligent, so it's possible that Sam's version would also have similar abilities. However, as CLU in the movie ultimately grew beyond his programming and became a flawed and dangerous program, it's important to ensure that any AI systems created are designed with proper safeguards to prevent unintended consequences.