Exactly what you said.
One of my all time favourite movies is Kiss Kiss, Bang Bang directed by Shane Black, the man indirectly or directly responsible for some of the greatest action movies of the last twenty years (Also the guy with the glasses reading the comic in Predator). In it, Downey Junior plays a criminal who, entirely by accident, stumbles onto an audition and...NAILS it. Flown out to LA to read for a part he finds himself, aided by Val Kilmer as 'Gay Perry' the studio detective caught up in a case which involves pretend detectives, real murders and manages to inform on both noir and action movie logic whilst at the same time being a story in it's own right. It's GLORIOUS.
The moment Stark says 'Oh no, this is the FUNvee, the HUMDRUMvee is back there'? I was in:)
Wonderful movie. Big fun.