HD, Tacpot and Trine hit the nail on the head. Standard R/T is great but often requires a little extra to be VALUABLE R/T.
Including the runway designator in all clearances/reports is essential at places like LHR with multiple runways and so is a damn good habit to get into from the start.
LHR and other places require the following on first contact - callsign, current and cleared level/altitude, any non-standard clearance you may have and ATIS code (arrivals). This is so that they can check your mode C and your understanding of your clearance - so "Haethrow Director, Speedbird123, passing FL95 for FL70, Direct Bovingdon, Information G" is ESSENTIAL info for the controller.
If you are VFR at an airfield with 1 runway, 1 circuit direction and have not left the circuit (still on original ATIS) then you need to say a lot less in your calls.
As for the guy at NCL passing a FLIGHT LEVEL while reporting "QNH XXXX set" - GIT! That and including his speed are all he got wrong because failure to include enough information makes for question and answer as the controller has to winkle it all out of you.
[ 11 December 2001: Message edited by: moggie ]