Stand-out Poems

Sometimes one is struck by an excellent poem and buy a whole book by that poet in the hope that it will be full of such poems but it proves not to be.
I wonder if this is because the moment has passed, or because expectations have been raised too high or that in fact there are some poets who did write one brilliant poem and then a lot of others.
For example, Richard Wilbur, Transit http://www.americanpoems.com/poets/Richard-Wilbur/17602
Marianne Moore, The Steeple Jack http://www.hearts-ease.org/library/contemporary/moore/16.html
Paul Durcan, That Propeller I left in Bilbao,
Jane Holland, They are a Tableau at the Kissing Gate http://www.weddingreads.com/They_Are_A_Tableau_At_The_Kissing-gate-Jane_Holland/

Or it might just have been an excuse to post a few links.