I thought he might not make it through the first round though, was only the bell that saved him from losing in round one for sure, he was all over the shop after getting knocked down in round 1.
Round 2 he seemed to be getting back into things, but his brawling style of boxing just got the better of him as Pacquiao timed his KO blow perfectly (his coach said they'd been working on exploiting the weakness that Hatton has with his style of 'all in' fighting).
Actually worth staying up to watch (3am my arse, had to watch the two warm up bouts first so didn't start until at least 4-5am!)... will try and find a clip of the knockout punch now because that was truly awesome...
[ame="http://www.youtube.com/watch?v=FxfHWTETT_o"]YouTube - round 2 - Pacquiao and Hatton[/ame]
Worth watching from start because it shows you how he was knocked down in the first round a few times already... then after that:
KO is at 3:46, 5:17 has incredible slowmo replay, first shots of Hatton off the canvas are around 6-7mins (at least 3 mins after getting KO'd). Hope he's alright, not heard anything about it on news as yet.