Defining moments of a feud

Hello
 
What would you say was the definining moment or match of the following feuds?
 
1. Ric Flair vs Dusty Rhodes
2. Midnight Express vs R and R Express
3. Hulk Hogan vs Randy Savage
4. Steve Austin vs Vince MacMahon
5. Shawn Michaels vs Bret Hart
6. John Cena vs Edge
7. Hulk Hogan vs Sting
 
and
 
8.  CM punk vs John Cena
 
Thanks

 

1.  The PPV debut of the Dusty Finish at Starrcade 85.
2.  No real "defining" one, I'd say.
3.  The backstage brawl on The Main Event that turned Savage into the biggest star in the world for a while.
4.  The Tyson brawl in February of 98 or Over the Edge with the Vince as referee gig.
5.  Bret does the first 20 minute interview on RAW from a wheelchair, goes way long, Shawn superkicks him and throws a fit backstage.  
6.  Edge wins the title, ratings go way up, he drops the belt back to Cena at the Rumble because HHH.  
7.  Sting rappelling down from the ceiling to challenge him at Starrcade.  It was all downhill from there.
8.  MITB, duh.