I posted a Star 80 TV spot a few years ago. Now, from the Warner Archive VOD YouTube channel, we have what appears to be a theatrical trailer (sans billing block). Hopefully, a widescreen Blu-ray (we can dream) or DVD of Fosse's final film is coming soon from Warner Archive. There is an ancient, full-frame, feature-less DVD, which now seems to be OOP and quite pricey.
More of Burns' awesome work--why was there no soundtrack LP for a BOB FOSSE film for crissakes?!--can be heard in the below scenes, to my ears, the music drawing inspiration from disco, Billy Joel, "I'm So Excited," and "On Broadway." Love the American Gigolo vibe of the shopping scene.
These Roberts-centric scenes take on a fun, humorous quality, when taken out of the context of the larger narrative, which is, of course, quite tragic, disturbing, and unpleasant. More than most other instances of actors essaying people who behave badly, that I can recall, Roberts plays this scumbag seemingly without any regard to how hate-able and pathetic the character and, by extension--he, comes off, resulting in a masterful performance.
This might have something to do with Roberts wanting to make his character (a statutory rapist) in the subsequent Runaway Train more sympathetic by changing him from a hardened New Yorker to a Southern country bumpkin. And, it almost certainly impacted his future career in a negative way, as he became so associated with, and was so good at, playing a very bad guy.
At the start of the below video, Mickey Rourke preaches the gospel with regards to Roberts when he's supposed to be accepting his Spirit Award for The Wrestler. Says Rourke, "Eric Roberts is the fuckin' man."