I really liked the image you put up, Q- it strikes a chord with me as well.
I can't remember who painted it- wish I could- but my favorite painting I've ever seen of Jesus was of Him happy and laughing, surrounded by children. It may have been in a local Christian children's hospital, but it was years ago and I can't remember. It was a huge painting, though, about the size of a wall.
In my imagination, Jesus looks Jewish, but He sometimes wears Druidic robes and carries a staff with a lantern attached to it. I love the symbolism of Jesus being the Light, forging the way through darkness. I imagine Jesus as a joyful, encouraging person just as frequently (if not more so) than I imagine him as a contemplative, serious one.
I've seen statues of African-American Jesus before, and I think they're neat. I haven't seen an Asian Jesus yet.
I think the Christ is a living entity and though the human Jesus was Jewish, the risen Christ, the creative Word incarnate, is universal. So I think it is appropriate that He is depicted as every ethnicity and culture.
Most of the art I'm familiar with in the church I go to when I go (Episcopalian), is stained glass and Jesus looks like a Jewish guy. I rarely see a blonde, blue-eyed Jesus.