Yep a little trick learnt a few years back
drag out a crop selection and on the option bar is a checkbox for Perspective which allows you to adjust the corners of the selection - simples!

(
maiden is filmed before a live studio audience,
Sun 24 Apr 2011, 14:48,
archived)
oooh will have to remember that one
:)
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Rev. Jesse. broke his ankle,
Sun 24 Apr 2011, 14:54,
archived)
What's more is that you can set the dimensions on the Options bar of the final crop
somewhat like a context aware scale - limitless possibilities especially for scaling images to fit for website design for example.

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maiden is filmed before a live studio audience,
Sun 24 Apr 2011, 14:57,
archived)
i knew about the size of the output
but didnt realise about the perspective - very handy :)
(
Rev. Jesse. broke his ankle,
Sun 24 Apr 2011, 15:02,
archived)
*makes further notes*
(
real i'm not happy 'til you're not happy,
Sun 24 Apr 2011, 15:14,
archived)