RalphSteadman has illustrated AnimalFarm and several of HunterStocktonThompson's books.
His caricatures used to be world-famous, but in the late 80's he grew tired of feeding the egos of politicians (as he put it) and vowed to never again cartoon any politicial leaders.
His style is grotesque - and that is a GoodThing. --OleAndersen
This is called "Football Crazy":