New answers tagged image-editing
If you don't want to download anything - and if skewing isn't an issue - MS-Office's picture viewer will allow arbitrary (degree-level precision) rotations. From Win Explorer, right click the image and Open with ... Microsoft Office 20xx Select 'Picture/Roate and Flip...' from the menu Then, in the right hand pane, you'll notice the 'by degree' text box.
I doubt that a readymade solution exists. AFAIK Visual Object Recognition is still a field of heavy research. The problem you describe could probably be tackled using existing techniques (similar to face recognition) but I don't think the problem is common enough that someone implemented this. If, then AFAIK not inside photoshop. Notice I could be wrong, ...
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