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What are those pictures that have a picture, surrounded by a black frame with subtitles?

I used to know what they were called but I cannot remember. If you google images the word "perserverance" you'll see what I'm talking about. The pictures with black frames and subtitles.

Public Comments

1. Like this? http://www.flickr.com/photos/27758655@N06/3428645014/ I don't know if they are 'called' something, but when used properly, they can be hilairous!
2. Motivational posters. There are also sarcastic ones called Demotivational Posters.
3. I think they are called motivational posters
4. The photo itself has no particular name. The posters of motivation/demotivation are just one use of the sort.