I attended a tailor-made 5-day course “Transient middle cerebral artery occlusion in mice” in March 2010. This was by far the best course I’ve ever had. I came with limited micro-surgical skills, but in just a few days I succeeded in performing a very complicated operation. This had never been possible without René’s vast experience and calm teaching style. His surgical capability exceeds anything I have ever seen and he manages to share his knowledge in a highly enthusiastic yet comfortable way. We worked hard, focused, and concentrated in a working environment filled with laughter, praise, jokes, and inspirational conversation. René is not only a super-surgeon but also a wonderful human being with a lot of life experience to learn from. I came with a lot of problems surgical as well as practical and René came with many possible solutions both in regards to anesthesia, analgesia, setup problems, experimental design, etc. For me personally, this course has saved months of hard work and given me a much better experimental setup as well as made me a better surgeon. Thank you, René !!!