I read my evaluation comments (they came this morning). I was a little spooked because for the first time, the secretary adopted the policy of putting a blank sheet over the comments before putting them in the mailbox, and I was afraid that that meant I had received some very harsh ones she didn't want my colleagues seeing.

No. I received a few of the typical "The tests were too hard" and "I found this class uninteresting" comments, but in my majors classes, people said things like:

"Her door was always open, if you had a question or a problem she would help you"
"I learned a lot in this class. She had a way of making it interesting even if the topic wasn't your favorite thing."
"Thank you for this class." (That last from a student who admitted that after taking the class, they decided they really didn't want to continue on in ecology after all.)
"I was able to get an internship using the knowledge I gained in this class."
"She was always enthusiastic and clearly cared a lot about what she was teaching."

In the majors class, I received more - and more substantive - positive than negative comments. (Oh, I got negative comments, but some were ones like "the tests were too hard" and stuff, where I kind of shrug and go, "that's what you think.")

So, I might not be the most exciting or entertaining instructor ever (And I know that, and I own that fact: it's not who I am), but at least I feel like I'm giving the students something of value. And it looks like either I did unusually well this past spring, or else I had a class full of more committed students.