I use one of those Aerating spinner things with my drill to aerate.
I was wondering if it's possible to aerate too much?
Wyeast has a good video here on the subject:
Secondary: 1 Gal Oaked JAOM (4/8/14)
Aging: JAOM (4/8/14)
Drinking: Vanilla Stout (5/18/14), Coffee Stout (6/22/14), Water and Craft Beer
But yes you can over aerate, if using pure oxygen
Here's another vid on yeastiness (plus she's pretty cute)