Monte Barret's disasterous ring walk against Haye was pretty funny. Also I might be wrong but wasn't there a semi-prominent fight where the losing fighters mother came into the ring and started whacking his opponent with her handbag?:: Or has my subconscious mind randomly generated that image for me?
http://www.youtube.com/watch?v=BhbM9VXeOJc at 3.15. also watch the start to see the boxer that couldnt get into the ring leave the ring .