ARAMAIC DAY: Supernatural Syriac (Exploring Our Matrix). James McGrath noticed that a Syriac manuscript has a cameo in Supernatural and he promptly went and identified the manuscript, which, of course, has nothing to do with the storyline in the episode. I haven't watched Supernatural myself, but I have noted that the archangel Metatron is one of the characters in it.
Cross-file under "Syriac Watch" and "Metatron Watch."