CBS alleges that “I’m a Celebrity, Get Me Out of Here” infringes its rights in “Survivor” and has sued ABC. Here’s a BBC article referring to the UK version of “I’m a Celebrity . . . ” as a ‘Survivor spin-off.’ (both reality shows are based on UK versions). Bob Geldof (of Boomtown Rats fame) owns the rights to ‘Survivor’ and began threatening legal action a while back. My legal assistant probably doesn’t know who the Boomtown Rats were.