If they ever did make a TPIR movie... I think a good way to open the movie would be the current Bob Barker closing the show as he always does, giving his spay and neuter plea, making his way to the big doors, and waving to the audience. Then, as Rich gives one last acknowledgement to Bob, Bob walks backstage, to his dressing room, looking not quite as happy as he usually would look on TPIR, and that's when the movie really begins.
The narration could be something like "This is Bob Barker, host of the long running game show, The Price is Right. Bob has been through a lot in the last 10 years.... lawsuit with models (cut to footage of Bob talking about Dian, Janice, and Holly) lawsuits from other former employees, and the death of announcer Rod Roddy (cut to footage of Rod). What you see on The Price is Right is one thing, but off camera, things aren't always happy on the set.... However, it wasn't ALWAYS like this... (cut to a dark haired Bob Barker, looking much happier and laughing)
Granted, this is based on what we've heard on E! True Hollywood Story, but still, IMO, a good way to open a movie about TPIR.