Calvin is great. I had a series of problems with my Chromebook and as I own my own business, having my computer go on me was an absolute death sentence. Calvin always saw me super last minute and would do what he could to fix the issues as quickly as possible. My hard-drive ended up having to be replaced and is good as new. I have noticed that my trackpad has been acting up since the repair and Calvin has seen it to try to resolve the problem.
Also, save yourself the hassle and get to his office by going through Blue Banana to the elevator vs the semi-functioning buzzer system.