That was a good year, without a doubt. I think 1966 is maybe a bit more undervalued.
Sure, people value The Blue Max, The Sand Pebbles, and to a lesser extent Stagecoach and The Trouble With Angels. But I think Our Man Flint is pretty underrated (people seem to prefer the sequel score, which is inexplicable to me) and I think Seconds is one of his absolute greatest but more overlooked works.
But as for *most* undervalued...realistically it's probably 1972 because so little has been released from it:
I've done complete score breakdowns for his scores to Crawlspace, The Man, and Pursuit from that year so I am very familiar with how excellent they are, but they are likely lost to time and will never be heard on their own on album:
viewtopic.php?f=4&t=7213viewtopic.php?f=4&t=6967viewtopic.php?f=4&t=7236His gorgeous work for The Other is his only film score released from that year, and that as a frustrating truncated suite (the Twilight Time isolated score track reveals the expanded score in a much better light but still preserves the film's edits of the music and so still isn't even complete).
Finally there is his lovely work on the main theme and at least three episodes of the short-lived Anna and the King TV series for Fox...between those three episodes Varese only released 15 minutes of music on their limited and OOP Jerry at Fox set. So yeah, probably pretty undervalued by film music fans in general.
And even I am totally unfamiliar with Lights Out and The Culpepper Cattle Co. -- is anyone else familiar? Did he write any good original music for these films?
Yavar