For those still stuck in the Responsorial Psalm syndrome (like myself and many others), Jeff Ostrowski has a WAY COOL FAR OUT EXCELLENT complete Responsorial Psalm project for the entire three-year liturgical cycle. What's nice too is that they are free (but please give the guy proper credit, ok). The Psalms are extremely well-written, with accompaniment (intended for ORGAN, not piano or keyboard) - metrical refrain (some with multiple melodies and/or multiple harmonies) with Psalm Tone verses.
I very highly recommend these and may start programming these for some Sundays of the 2007-2008 choral season at Holy Ghost Church.
RSCT to Jeffrey Tucker/NLM.