If you want some nice offbeat entertainment, go to this Web site:
A 3-part, pretty spiffy story of Batman and Robin meeting the original Star Trek is to be enjoyed there.
Not a Superman thing, but Joker is great and Batman is more like Adam West's version.
The real shortcoming with these productions is that they give Star Trek's creator, the late Gene Roddenberry, a lot of credit, but none to DC Comics or Batman's creator .... Bob Kane.
(Note: I regularly purchase DC Comics products. Occasionally, I do receive some free comic books from DC, but NOT the comic or item blogged about here, unless stated otherwise.)