I'm a big fan of the web comic Jesus and Mo, which a satirical slap in the face of the archaic views prominent in some sections of the Christian and Islamic communities. Saint Young Men is more a light-hearted affectionate poke in the ribs.
This is definitely the most hilarious, refreshing manga that I've read in a long time. It's written by Hikaru Nakamura who also writes. Arakawa Under The Bridge, which has recently been turned into a movie. I'm yet to read the manga, or see the movie, but they are definitely on my to-read list.
You can catch Hikaru Nakamura on Twitter here: https://twitter.com/hikakom
And the Saint Young Men website here: http://morningmanga.com/lineup/25