Derek is a wondrous chap. He wavers between outright sanity and inner-head debates regarding the quantification and diversification involved in bio-taxonomy. I know he's partial to ale but has been abstaining recently owing to a rather obnoxious bout of inwards directed health-kick sycophancy. I sometimes marvel at his sheer ability to do almost anything, but then I chuckle at his almost autistic inability to do the more pragmatic and earthly things he should be doing.
I also know he loves easily and is easily loved (which has lead to more than a few altercations with a swab to Mr Eye). It spreads around like Jam. Strawberry Preserve with butter on toast.