The Freedom From Religion Foundation just put up this billboard in Lubbock, Texas:

That billboard will be up for six months and the story behind why it’s up there is great:
The billboard reads: “I believe in an America where the separation of church and state is absolute — John F. Kennedy.” The billboard quotes JFK’s famous speech as a presidential candidate before the Greater Houston Ministerial Association on Sept. 12, 1960.
“The deterioration of respect for this constitutional principle since that speech is breathtaking,” said Annie Laurie Gaylor, FFRF co-president.
The billboard was donated by FFRF member Michael Zargarov of Houston. Zargarov kindly gave FFRF the space after selling a pair of chairs from the movie, “The Ten Commandments.” The buyer just happened to own a local billboard company and offered Zargarov the space as payment for one of the chairs, valued at $10,000.
“It was very generous of Michael to think of FFRF when it came time to select a billboard design,” Gaylor added.
If anyone wants to offer me billboard space, I’d be happy to do your math homework for you.