Alasdair Gray 0-70 2004 BBC Artworks Scotland film made on the occasion of Glasgow artist and author's (best known for Lanark) seventieth birthday. Also a short clip and another film on his mural work as embedded Youtubery at his site. (Previously.)
Paintings of Buddha dating back at least to the 12th century have been discovered in a cave in Nepal. Tipped by a local shepherd, a team of international researchers climbed to some old caves where they found a mural with 55 panels depicting the life of Buddha, reminiscent of the artwork of the Ajanta Caves in India (possibly NSFW). There are probably many other forgotten caves in the Mustang area (previously discussed here,) but they may be threatened by a planned trans-Himalayan highway.
Eric Grohe Murals. From kinda cheesy to monumental, and with the ubiquitous floating Jesus and teary-eyed Liberty. Whatever the subject, his work is technically exceptional.
A restoration project has been underway since 1998 to restore the 15th-century Tibetan Buddhist monastery wall paintings of Lo Monthang, a city in the kingdom of Mustang in northwest Nepal. The results have been very impressive. Mustang is also home to some amazing cave temples.
Fading Ads (click thumbnails in lower right grid). If you look closely, you can probably find these all over the older parts of your town. Some border on the weird, most are nearly gone, while some are still going strong (about the project).