Just before the famous 'Om Shanti Om' song starts, the banner on stage reads as 'HMV Diamond Jubilee Celebration'. And then in the next shot, the banner above the audience reads as 'Golden Jubilee Celebration'.
While being examined in the hospital, a number of electrodes are connected to Monty's head. Yet the machine shown with the waves and blips on the screen is an EKG, used to measure heart activity, not brain activity.
After Monty collapses on the stage, the next shot shows the hospital board which reads "Neurology and Psychiatry". Strangely, just above it is written "Nephrology", which is the branch of medicine that deals with diseases of the kidney.