One scene written by him sees a jock strap full of tennis balls represent a MIRV ICBM uselessly attacking Israel.  
In this author's first novel, the protagonist searches for her great-grandmother, one of Wittgenstein's students.  That book contains a character intending to grow to infinite size in Project Total Yang and is titled The Broom of the System. One scene written by him sees a jock strap full of tennis balls represent a MIRV ICBM uselessly attacking Israel.  Another character in the same work by this author skydives while wearing a bird costume as a stunt for his team; he is named Orin. In that book by this author of (*) Consider the Lobster, one character reads a proof of the Mean Value Theorem in one of the author's trademark footnotes, and Quebecois separatists in wheelchairs search out Hal Incandenza's father's masterwork, the titular Entertainment. For 10 points, name this author of A Supposedly Fun Thing I'll Never Do Again and Infinite Jest.
In this author's first novel, the protagonist searches for her great-grandmother, one of Wittgenstein's students.  
David Foster {Wallace}