I remember back in 1991/1992, England were flogging the hell out of New Zealand, I'm fairly sure this was the third test at the Basin Reserve where Jones and Wright got tons and New Zealand saved the match... Martin Crowe is fielding at midwicket, Phil De Fretias goes on the hook off either Watson or Cairns, Crowe chases back from midwicket and over his shoulder dives full length and takes it inches off the ground.
Another ripper was Roger Twose at Eden Park in 1997/98 against South Africa in an ODI, I think it was Darryl Cullinan off someone like Chris Harris, hoicks it miles to cow corner, Twose comes around from deep midwicket and takes a miracle catch. Also Murray Goodwin caught by Craig McMillan at Eden Park, Goodwin launches into a full blooded cut stroke, McMillan dives miles to his right full stretch and takes a screamer. Another one was off Chris Cairns in 1991/92, Adam Parore's second test I believe with Ian Smith out injured, Cairns slants one into leg, Chris Lewis gets an outside edge, Parore's already gone a mile down leg side, dives full pelt to the right and catches it behind him.
But Sinclairs and the two mentioned of Nathan Astle's are unbelievable catches.