Panasonic All-in-One Cordless Hair/Beard Trimmer (ER224S)
I picked this up a couple weeks ago and I couldn't be more pleased. The main selling point to me is that it's water proof. Being able to do a quick trim while in the shower is fantastic.
This could be used to cut my hair as well, but we already have a set of Wahl clippers for that. I can say it does function well to clean up the details of a hair cut.
Picked it up at Target for ≈30-40 $'s.