TWINS 
(Encore on Comcast) A one-joke comedy - Arnold Schwarzenegger and Danny DeVito play the title roles. But it’s improbably charming thanks mostly to the sweet goofiness with which Schwarzenegger throws himself into his first comic role. (PG; runs through Nov. 19)
CAVEMAN 
(Comcast Free Movies) Ringo Starr in a comedy that’s even more prehistoric than it wants to be. It consists mostly of grunts, slapstick, and Barbara Bach (Mrs. Starr) in a revealing animal hide. The kids will lap it up. (PG; runs through Nov. 23)
