The two I liked are because I picked them:

Watson over Benn (just in the time frame), it still amazes me Benn came in a huge favourite; anyone who had seen Watson/Lee could see what was going to happen!

The best bet I ever had was putting a tenner on the 24/1 shot Holyfield to beat Tyson...

The biggest in the last 20 years is Tyson/Douglas; then Tyson/HolyfieldI and I would say Forrest/MosleyI sneaks bronze.