New in Wolfram Mathematica 7: New Interface Elements  previous | next 
All Mathematica constructs can be rotated, and remain operable.
In[1]:=

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Nest[Manipulate[Rotate[#, r], {{r, Pi/20, "angle"}, 0, 2 Pi}] &, 

 Manipulate[Plot[Sin[n x], {x, 0, 2 Pi}], {n, 1, 10}], 3]
Out[1]=