Anyone of a certain age riding an F-Line trolley or bus on Market toward Van Ness can be forgiven for wondering if they've hallucinated, projecting a vestige of their childhood onto a passing wall. Many riders probably conclude that's the case; blink and it's gone.

But those walking past Market and Brady know it's true: There's a professional-grade graffiti mural composed of Donkey Kong Jr., Q-Bert, and, a treat for the careful onlooker (again, of a certain age) Ghost Monsters from Pac Man.

The San Francisco 1980s nostalgia wall was tagged on the videogame-centric Web site Pixelated Geek in a feature highlighting worldwide videogame-related graffiti. We are self-admitted San Francisco chauvinists, but we couldn't help but chuckle at the following, spotted in Halifax, Canada:
Here are some more good ones: