adjective
BAD : The film reviews are always worthwhile looking at.
GOOD : The film reviews are always worth looking at.
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it's worth/worthwhile doing sth : 'It might be worth having one or two copies made.' 'Is it worthwhile talking about it now, or shall we leave it until our next meeting?'
sth is worth doing (NOT worthwhile ): 'Some of these so-called professional teams aren't worth watching.'
Compare: 'Was the long drive up to Scotland really worthwhile?'