Sport Horse Database sire and dam lines-- Too cool!
I had so much fun looking at my 2 year old's sireline tracing back 26 generations to the Darley Arab. There were several old TB names in there that I recognized. I discovered that he has Bend Or 12 generations back in his pedigree, which might serve as an explanation for the plethora of Bend Or spots on his body. He doesn't have a very extensive mareline (going back only 6 generations), but it's great that these can be accessed with just a click.