The opening lines of Tennyson's "Charge of the Light Brigade" are fine examples of amphimacic dimeter (the amphimacer is / * /, heavy-light-heavy):

                                       /      *    /    |   /    *    /
                                  HALF a league, half a league,
                                  Half a league onward

Further on, the poem shifts between various kinds of triple (three-syllable) meters.