For anyone who's curious, here is the list of ALL problems solvable in BF - that is, every problem in this list has at least one solver in BF. The problems are sorted in decreasing number of solvers.
Sorry to site managers (I wrote a simple web crawler to get this list, so there may have been a peak in the incoming traffic to the server.)
Enjoy Brain-f**king 
Classical:
Challenge:
Partial:
Tutorial:
Basics: