THEME:   homonyms of the words TO, BE, OR, NOT, TO, BE found, in order, at the end of phrases   
GOOD ONES:     Speaker {& theme}   HAMLET   
Olympus competitor   LEICA [camera, not ancient athlete]   
Public opening?   JOHN Q  [the generic name, not a store event]       
BTW:   
Tossed off the covers   AROSE [I guess, but tossing off covers is often done in bed on other occasions and suggests discomfort rather than rising to meet the day]      
Disco phrase   A GO GO [as I remember, A GO GO referred to go-go dancing which predated the disco era by about a decade --- the monkey and the jerk of the 60's were two go-go dances --- but some clubs from the go-go era may have remained open long enough to become discoteques]
Usually Ed gives us a science word or two, but perhaps his retirement from medicine  is having the intended effect.         
RATING: 
 
  
   Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun