Bakshi's LOTR? That was so long ago I've almost forgot! :D As for ST IV, it's probably the only movie where Rosenman's style fits in, and I'd rate that one third for ST scores, with ST I by Jerry Goldsmith being first, and ST VI by Cliff Eidelman being a very close second.
Anything written by Leonard Rosenman. He uses the same style over and over again! From East of Eden to Fantastic Voyage to Star Trek IV, it's the same style repeated ad nauseaum!