Fr Corapi has some awesome ones. Everything he has is great. I went to see him this past Oct. and ended up with 7 of his tapes/cd’s. Powerful stuff.fathercorapi.com/index.aspx?SID=1&
check out the Reference Section at Phatmass. I have collected links to articles about or defending Catholic doctrine and arranged them by topic. basically, i have done all the internet searching for you. enjoy!