I get the feeling this was your typical "eye-candy sweeps" episode. That said, I do like sweets.
It leaves further questions that are definitely anti-canon: Is the Kryptonian super-science stuff actually some form of sorcery?
Is magic actually tapping into the same primal forces that Kryptonian science is tapping into? They could be like two sides of the same coin, which is why magic has always been able to hurt Superman.
I also found it interesting that Clark ran straight to Lex for help with the college recruiter. It strikes me that Clark is now taking advantage of Lex's friendship more willingly, leading him down a path he normally wouldn't go. I wonder if the next break will be from Lex's angle, and more permanent?
John and Martha made only the barest of appearances (more Sweeps meta-thinking), which may, along with last week's defiance of his father, signify Clark's growing independence. He's a half-step away from complete adulthood, and that's a neat period to watch in anyone's life, because they make the most entertaining mistakes.
My favorite line:
Johnathan:
"Can you explain this?" (holds up the bra)
Clark:
"Dad, it's not what it looks like - it was magic."
Martha:
"I'm sure it was!"