The artist working on a self portrait. (source)
Chuck Close, Maggie, 1996, Oil on Canvas (source)
These paintings are phenomenal- not in the least for the fact that they are only part of Close's expansive works- he also does prints which in alot of ways are more impressive than his paintings. They are unique works, that deal with representation and abstraction so well. He breaches the illusion made by his realistic portraits by composing those portraits of small abstract peices. The viewer is constantly reminded of the flat surface of the canvas because of the abstractions- even while they explore the illusion of depth the portrait gives.
also check out his site- it's fascinating - Chuck Close home