Why be ashamed? Ken was pretty good during his prime(Despite what anyone tells you), and had a very successful school. The Den produced some really good fighters.
Ken's a former King of Pancrase.
He's beaten Bas Rutten twice.
He beat Dan Severn.
Off topic, but Ken Shamrock vs Don Frye from Pride Bad Blood is a surprisingly good match that could've gone either way. One of those fights where you think it's going to suck, but ends up being really good.