Kevin Dotson said he didn’t care about the “L.A. stuff” when he learned that the Steelers had traded him to the Rams. But there he was, nearly three years later, hitting the switches on a blue lowrider as he drove away from the Friday house after nailing the scenes in his acting debut.  It doesn’t really get more L.A. than that. However, at the time of the trade, Dotson just wanted to prove to the Rams that they had made the right decision to acquire him, which he did as one of the league’s top guards since arriving in Los Angeles. So, yes, Dotson initially didn’t care about everything Hollywood had to offer, but the mass communications major at Louisiana has always had a creative side, so much so that he’s had an interest in doing voiceover work for quite some time now.   Dotson was an ideal candidate to have a role in the Rams’ popular predraft hype film titled Thursday , which paid homage to the 1995 classic Friday , starring Ice Cube and Chris Tucker, the actors who played Craig and…