Tiago Hoisel is an illustrator and digital painter from Brazil. Hoisel works primarily in Photoshop to create his wildly exaggerated portrayals of people, famous and otherwise, as well as animals and other characters.
His caricatures, as stretched and loopy as they may be, are grounded in the tactile realism of detailed textures and firm control of light and shadow.
Though his own blog has not been updated recently, you can find galleries of his work on CGHub and CGSociety.
[Via Metafilter]