If Rick Nielsen weren’t one of rock and roll’s most colorful and accomplished characters in real life, there’s no way to have dreamed him up. A homemade cartoon figure who is also a down-to-earth family man. A superlative guitarist who makes it look like a goof onstage. An inveterate joker whose best-known song is a sincere request for love. You think it’s all an image, a pose? Spend a few minutes with the man and you’ll find out just how wrong you are.