I know it gets mentioned a lot, it's also not relevant to this thread (very loosely so I'll mention it) but the uppercut that Vitali stayed up from against Lewis is probably one of the hardest punches I can ever remember anyone taking and not getting KO'd from.

I can't find the vid, but Macrinelli recently (his last fight) somehow got back up after a hellish shot..........only to get sparked out again in seconds! which reminds me, that should go in the KTFO 2010 thread! I'm on my phone so can't link to YouTube, but if anyone has time, it's a leathal ending.