All noteworthy villains have equally noteworthy names. "Tom" doesn't really fit the bill.
When Harry first picked up a mysterious book, he never thought it could lead to new friends, new discoveries, and maybe even a new father figure.
Children, you do not cast a spell before it is completed. Otherwise, something could eventually happen. Such as Voldemort turning into a unicorn.
Harry Potter was expecting a normal second year, with boring classes and hanging out with his friends. He was certainly not expecting house-elves, being turned into a girl, the Chamber of Secrets, and Nargles. (SS compliant, gender-switch, and crack)