I know there was a Hitman 2 Let's Play, but I don't think it ever got finished. Plus, Hitman: Blood Money has a bunch of new cool features such as being able to push people over railings. I'm making this a video let's play, since a lot of the game's awesomeness doesn't come across in screenshots. I'm also planning on letting people decide how I tackle the next mission. I can think of at least four ways of tackling things..
Silent Assassin: Get in, kill your target, and get out without killing anyone.
Regular Assassin: Kill anyone who is an obstacle but don't just murder people willy nilly.
Gun Crazy Psychopath: Just go batshit crazy and start gunning people down.
Stalk and Slash: Kill as many people as possible without having anyone witness 47's deeds.
Insurance Salesman: Kill as many people as possible by pushing them over rails or down the stairs.
Here's Part 1 - The Vineyard. I skipped the 'Death of a Showman' level since it's a fairly boring tutorial level and it doesn't relate to the story at all.
Part 1 - The Vineyard
Vineyard Part 1 - http://youtube.com/watch?v=ujrU8PaLML4
Vineyard Part 2 - http://youtube.com/watch?v=0dGjbouPWYY
Part 2 - Night at the Opera
Opera 1 - http://youtube.com/watch?v=ZQbAw1BGLx4
Opera 2 - http://youtube.com/watch?v=WQ7wSC8uJzM
Part 3 - Clinically Insane
Clinic Part 1 - http://youtube.com/watch?v=qvNCBpJepK4
Clinic Part 2 - http://youtube.com/watch?v=eNWij8c1Llw
Part 4 - Murder in suburbia
Suburbia 1 - http://youtube.com/watch?v=vUAZD7qihfo
Suburbia 2 - http://youtube.com/watch?v=NsxCyVQUL8A
Part 5 - Gabriel Knight Must Die
New Orleans 1 - http://youtube.com/watch?v=QHw6GBbZF_w
New Orleans 2 - http://youtube.com/watch?v=6qLJdBFpj-c
Part 6 - Bloody Christmas
Christmas Party 1 - http://youtube.com/watch?v=EsvsasWpcDk
Christmas Party 2 - http://youtube.com/watch?v=JO0SDAMUb3Y
Part 7 - Mississippi Blood Pie
Riverboat Part 1 - http://uk.youtube.com/watch?v=M_8Hn4gaFxE
Riverboat Part 2 - http://uk.youtube.com/watch?v=wO6cFeo0Wy0
Part 8 - It's a nice day for a redneck wedding
Wedding Part 1 - http://uk.youtube.com/watch?v=r_gqSuGeMmQ
Wedding Part 2 - http://uk.youtube.com/watch?v=N-YzqkSK0Qc
Part 9 - Lucked Out
Casino Part 1 - http://uk.youtube.com/watch?v=7tzTqzONVT8
Casino Part 2 - http://uk.youtube.com/watch?v=f1ghoKlAqhk
Part 10 - My Heaven Is Your Hell
Heaven/Hell Party Part 1 - http://uk.youtube.com/watch?v=ZtNClSNHXoo
Heaven/Hell Party Part 2 - http://uk.youtube.com/watch?v=UrHi32gAihM
Part 11 - Mr 47 goes to Washington
Whitehouse Part 1 - http://uk.youtube.com/watch?v=acrYgsHB_7w
Whitehouse Part 2 - http://uk.youtube.com/watch?v=hFc6eJloORo
The End - Death of a Hitman
Requiem - http://uk.youtube.com/watch?v=wfZdiA_EzSI