The most excited I've been about a piece of code would probably be the time when I made a resource hogging thing in C. The reason I was really excited was because I haven't really written C/C++ that much, at that time I wrote Java mainly. Anyway, I was able to use up nearly 90% of the CPU (i7 something), as well as 14-15/16gb of ram the school computers had. A professor there saw it and was proud of me, which really motivated me. So I compiled it and copied it to almost all the library computers (with less resources), hid it, and made a shortcut to it on the desktop disguised as Chrome.