Jay Leno is NOT in Polyester
I think it's funny IMDb and wikipedia lists Jay Leno as an uncredited cast member in Polyester.
The reporter who looks like Leno is played by John Waters Dreamland regular cast & crew member Chuck Yeaton. http://www.fanpop.com/spots/dreamlanders/images/10488819/title/reporte r-played-chuck-yeaton-polyester-screencap.
On the region 1 DVD director's commentary, Waters says that shot always gets an unintentional laugh & he and his regulars like to kid Chuck about that. If it was Leno I'm sure Waters would have mentioned it in his commentary. Chuck Yeaton also plays a reporter in Hairspray(1988) and had small parts or was a crew member in at least 4 Waters films.
Disco sucks, kill all hippies. Pretty vacant, eh? Subvert normality. Signing off.