Surely one of the more unusual Sherlock Holmes adaptations to be aired on TV was the animated series Sherlock Holmes in the 22nd Century. In a nutshell, Holmes is resurrected in the 22nd century, in order to assist Beth Lestrade in her investigation of a clone of James Moriarty. "Watson" in this version is a robot (sorry, a "compudroid") wearing a mask of John Watson's face, and programmed to act like Watson.
Meanwhile, several of the episodes have titles borrowed from the canon of ACD's stories, e.g. "The Adventure of the Dancing Men," "The Musgrave Ritual," etc. (See the Wikipedia article about the series for more information.)
You can see this bizarre mix of Saturday morning action cartoon and Holmes characters on YouTube. The first episode is below:
I'm a stay-at-home dad, and Director of Music Ministries at a United Methodist Church in Mt. Juliet, TN. And a longtime fan of Sherlock Holmes.