Yes, I know that Dirk Gently's Holistic Detective Agency is largely a recycling of Adams's work on Doctor Who, and that Dirk Gently himself is mostly a placeholder for the Doctor himself.
But I don't care! It's Dirk Gently! On BBC Radio 4! I'm going to squee like a cheerleader and you can't stop me!
-The Gneech, who actually prefers Dirk Gently to Hitchhiker's Guide by a noticeable margin