General Preaching Links and helpful resources:
http://www.preachingcoalition.org/
http://www.domcentral.org/preach/cathresources.htm
http://www.catholiclinks.org/homiliasenglish.htm
St. Paul Center for Biblical Theology
http://www.crossroadsinitiative.com/library_category/38/Catholic_Bible_Study.html
http://phatcatholic.blogspot.com/2007/01/scripture-commentary-by-fr-william-g.html
http://www.catholic-pages.com/dir/commentary.asp
General Intercessions (Prayers of the Faithful)
Here are some general principles: http://dsjliturgy.blogspot.com/2004/09/10-principles-for-writing-general.html
And a good example of general intercessions for next Sunday: http://liturgy.slu.edu/17OrdB072609/ideas_other.html
Here are some interesting preaching blogs worth exploring:
http://www.catholicpreaching.com/
http://deacbench.blogspot.com/2009/02/its-general-mediocrity-of-catholic.html
http://www.americamagazine.org/blog/blog.cfm?blog_id=1
http://www.op-stjoseph.org/blog/tags/Word_to_Life