I missed this. I can't recall all the breeding behind Sam's Best (maybe do a search here for it?) but I do recall it was one of the better ones to be blooming out well recently. I think Lien Luu posted a photo of his when it bloomed.
Edit - he did but the photo link has been removed. However, I turned up two long roth related threads when I searched for "sam's best", Geff, you might do the same and settle in for some reading.