The ones that inspired the title of this post were the ones that got me started really looking:
This one is on the side of the building that houses the Russell Bazaar, on the east side of the 1-75 service drive. Someone put a lot of time and love into this beast, and I think he is pretty spectacular. Can't call him graffiti - he is definitely a mural. My son really loves him.
And a few more murals that I always enjoy seeing when I go into the city:
It's hard to take pictures while I'm driving, so I had the Boy take some of these - he didn't do too badly!
It's not the best picture, but this is a chiropractic/alternate therapy clinic and vegetarian cafe. I might need to stop in some time! Their website is here.