For me, hands down, it's Jana Cova. She should be a standup comic. Check out her description of a "medium-sized dick". She is the most erudite and camera-comfortable of all the girls I've watched on this site or DeskBabes.
So now I must ask, What happened to Jana Cova's interview video?
Why was it moved exclusively to DeskBabes?
Her VG page claims 4 videos but only has 3, while her DB page has 5.
:D