The Amazing Screw On Head
 

If you've seen Hellboy or read the comics, this is from the same guy. it seems like it could be a great show. it's got paul giamatti in it, so it's already pretty awesome, plus the premise is a disembodied head working for abe lincoln, so yeah.

the full pilot is here:

http://www.scifi.com/amazingscrewonhead/