After the Great Collective Mea Culpa thread, we need something to cheer ourselves up again!
Here's what I'd say:
1. I'm honest. I hate to tell lies, and in the few instances when I did (because unfortunately, it's unavoidable) that made me feel terrible. I'm also bad at lying, which certainly helps staying honest (but there's kind of a chicken-egg relationship here).
2. I like to think I'm fairly smart, or at least talented at the academic level. That's the only reason why I've succeeded at university despite working very little (see the biggest flaws thread: I'm awfully lazy). While I can say stupid things when unprepared, I usually manage to think through an issue every time I try to. I also have a pretty good memory for certain things (while having a poor one on more mundane things).