From top to bottom:
1. Clip from The Red Balloon (1956), Directed by Albert Lamorisse (via Three Potato Four) - you can also watch the entire film on Google Video
2. Still from Flight of the Red Balloon (2007), Directed by Hsiao-hsien Hou
3. Photo by Max Wanger (via Cup of Jo and swissmiss)
4. "Monsieur III" print by Blanca Gomez (via Oh Joy!)