Grimes' Time

As ER's borderline incompetent pothead Dr. Morris, Scott Grimes leaves most of the on-screen rocking to costar Shane West's CBGB T-shirts. But the Party of Five vet got himself on Billboard's Adult Contemporary chart this spring, peaking at No. 18 in April and holding on into June with ''Sunset Blvd.,'' the first single off his recent meat-and-potatoes rock CD, Livin' on the Run. It's Grimes' first album since attempting the obligatory child-actor music crossover in 1989 — after his success in Critters 2 — with a self-titled bubblegum pop record. (''It's jumped up on eBay,'' Grimes says of the Richard Carpenter-produced effort. ''It was, like, 3 cents before, and now I think it's up to 12.'') He now cites such influences as Bruce Springsteen and Bryan Adams, and once even got the chance to sing with the latter...anonymously, of course. ''I was just a fan,'' he says of being randomly called on stage to do ''Summer of '69'' at a concert in Calgary. ''But some girl in the front row yells out, 'Party of Five!' And I looked at her and went, 'Shh!' 'Cause you don't know. Maybe the Canadians hated it.''