"Metroland" should appeal to boomers, particularly ones who now find themselves in the suburbs and/or with families. (It did not appeal to the two senior citizen couples next to and in back of me who did not shut up throughout the whole movie as they didn't seem to grasp the concepts of flashbacks or fantasy images)
I'm sure there's other movies that have a friend and/or sibling interfering in a stable relationship and shaking the tree (my friend thought of "Hilary and Jackie"-- but maybe because both have Emily Watson, here bundled up in sweaters to try and make her less ravishing) but I couldn't think of one that deals with our time period of post-'60's measurements of personal happiness and fulfillment. We could relate to the English and Parisian experiences with parallel ones here from the same time periods of '68 vs. '78 (nicely accurate hair styles, make-up and clothes).
While there are no shortage of shots of gorgeous naked women, there's ironic visual comment regardless the lead character's lovemaking techniques don't improve over the decade of experience. One sees plenty of Christian Bale, such that I think it would, I imagine, appeal to gay men as well.
Nice use of punk music (freaking out the senior next to me!), otherwise the score was quite lovely by Mark Knopfler, with a closing song original to the movie, with apropos lyrics.
(originally written 4/17/1999)