Eww I don't know how anyone can find him sexy. Even his surname is irritating. I reckon he folds his clothes neatly before getting in to bed, and keeps his socks on.
If I had to describe him I'd say untrustworthy, deceitful, creepy, two-faced, funny, clever and sneaky. Poor bloke, I've never met him and he could be lovely, but it's just the impression I get from the look on his face, which is disgusting of me I know. I never judge people by how they look, but in his case there's something sinister about his eyes and thin mouth. I would never say this in real life as I think I'm a bitch for saying it.
And his children's books are excellent, I feel my DDs are very lucky to have him around as an author, he's like a Roald Dahl. He's quite childish in behaviour isn't he, so he really 'speaks' to children and seems to understand what kids want.
I think he camps it up for attention, which seems to work as so far he's got 8 pages of discussion on mumsnet about it.