I mentioned this briefly in
another thread, but here's the most absurd round I had, and a good'un.
On the very first hand and before the flop, Heavy, Tycho, Sam and Strong Bad all go all-in! I promptly fold.

Heavy wins and the tournament is now just the two of us w/ Heavy's 40k to my 10k. I have to keep folding my weak opening deals before the flop as he is betting high. Fortunately, it's so early in the game that the blinds are still small, else I'd have been done for.
So now it's down to his 44k to my 6k. I am dealt a couple decent cards and decide to go all-in before the flop. He calls and ultimately my hand wins. On the next hand, I pull the same thing. He calls and my hand wins. The following hand I get another good deal and the Heavy is checking after the flop, so I go all-in and the Heavy folds. Finally, on the next hand, I'm back to playing more conservatively, but after the flop I'm one short of an outside straight draw. Turn card fills the straight. I go all-in. Heavy can't top it. I win the tournament.
Winning four consecutive all-ins shows that it's better to be lucky than good.