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The juxt function is one of my favorites. It returns a function that lets you run many functions against the same parameters and returns the results as a vector.
((juxt inc dec even? odd? -) 1)
=> [2 0 false true -1]
@tomheyes
How about
((apply juxt [:foo :baz]) {:foo 2 :bar 3 :baz 4}
=> [2 4]
A really nice way to extract values from a map, especially nice if one is operating on a sequence of maps.