Hearns V Duran comes to mind, i doubt if anyone would've beaten Hearns that night.

Hagler V Hearns : 3 rounds of total mayhem!

For expectation and excitement i have to mention the Rumble In The Jungle, there were people who were genuinely concerned that Ali might be killed in the ring in Zaire. It was simply mind blowing watching Ali systematically dismantle the monster that was George Foreman in 1974.