Perhaps more than any other primarch, Sanguinius lightened up the imaginations of many hobbyists. I've seen a tremendous number of conversion of the Blood Angel's primarch, and a good number of original sculpts as well.
This is a mini that I got to paint just a little while ago that I was to make look like Sanguinius. The sculpt fits the bill nicely and worked well with the golden and red armor Sanguinius is known for.
Anyway, here he is: