If you haven’t heard Fr. Chad Ripperger’s talk on angels, you need to set aside an hour and make it happen. It’s mind-blowing. One of the most fascinating talks I’ve ever heard.
He has a bunch of other talks here, which I’ve only just started to go through. If you prefer to listen to them on your MP3 player, this is the place to get them. I should note that he licenses these talks as “penanceware,” which is not indicated on the YouTube video. The definition of penanceware is as follows:
These media files are Penanceware, which require that you do one of the following: (1) $1.00 via Paypal, (2) offer up a decade of the Rosary, or (3) perform some form of penance for the intentions of Fr. Ripperger (for each individual media file downloaded). The same rule applies if you copy and distribute to friends. External links, e.g. the videos from Keep the Faith, etc. are not Penanceware.