The only thing funnier than that parody is the original:
http://www.youtube.com/watch?v=4O2_rZIgrQI&feature=related
(If it has been removed, just search "Tom Cruise" scientology on YouTube. There are a gazillion, but his church keeps removing them. Isn't that ironic?)
It's funny when bad facts meet bad acting.
I wonder if the "church" paid to use the Mission Impossible theme?