Common depressive symptoms I get:

-heavy limbs
-low energy
-depressive feeling of my soul rotting inside of my chest.
-feeling like a failure, talentless, a complete waste of a human being
-not getting much joy out of life
-suicidal thoughts
-oversleeping

I've read that people with bipolar are more likely than unipolars to have "atypical" depressions involving increased sleep (rather than insomnia) and an increase, rather than a decrease, in appetite. Atypical depression also involves the ability to temporarily feel better in response to something good happening ("mood brightening") and an increased sensitivity to interpersonal rejection.