The guy was clearly in his own little world...kind of scary there are people like that who fly. Thankfully it sounded like although he was on her frequency he wasn't about to crash into anyone.
I would however maintain that provided pilots and controllers are competent light aircraft are fine to mix with the big stuff. Particularly in the US controllers are used to and generally very relaxed about light aircraft in busy airspace; I've flown IFR in a lot of the busy airspace around New York and Boston, never been a problem. Once got to fly over the top of JFK at about 6000ft, which at sunset was a pretty impressive sight with all the lights and everything.
Last edited by Contacttower; 7th Jul 2012 at 20:55.