The Gobbler by Adrian Edmondson

Julian Mann, the hard drinking, preening, and sexually provocative star of the TV sitcome Richard the Nerd, feels caught on the horns of a dilemma: should he be concentrating on his career, which is on the slide after an unseemly bout of fisticuffs at the BAFTA awards; or following his baser instincts and bedding every young girl in sight?
His twin dreams of comic immortality and a penthouse flat full of booze and young models seem to be frustrated by his wife and children; by Tom, his wife's best friend from university days, a pretentious 'National Theatre Player' who appears to be competing with Julian on the small sreen and in the bedroom; by the tax man, who's chasing him for sixty thousand pounds; and by Lillith, a psychotic fan, and member of a strange Herculean cult whose eight-year cycle of death and regeneration might augur Julian's imminent nemesis...