Michael J. Fox/Marty McFly

Find it on: Mullberry and Kenmare Streets, NYC
Will Ferrell Cats

Find it on: Freemans Alley, NYC
Vanilla Ice, Ice, Baby

Find it on: Division St. & Ludlow St., NYC

Find it on: Ludlow and Orchard Streets.
Bill Cosby

Find it on: Orchard and Division Streets, NYC
Bruce Willis/Pie Hard

Find it on: Bushwick and Troutman Streets, Brooklyn
Ted Danson

Find it on: Rivington and Chrystie Streets, NYC
Banana Air Jordan

Find it on: A wall in Wicker Park, Chicago
Ryan Gosling/Drive

Find it on: Ludlow and Stanton Streets, NYC — but it has sadly been almost completely destroyed.
Steve Urkel/Family Matters

Find it on: A wall in Humbolt Park, Chicago.
Farrel, Ferrell, and Pharrel Cats

Tom Hanks, who started it all:

Find it on: Milwaukee Avenue, Chicago

Find it on: Stanton and Orchard Streets, NYC

Find it on: Kenmare and Mulberry, NYC