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How to find web hosting that meets my requirements?

I'm researching a web host for a client and am looking for any recommendations of hosts you may have used and been happy with. Here are the requirements I've been given:

The hosting service needs to either provide or allow us to add the following functionality:  

i.  ASP/ASP.Net
ii. video streaming
iii.    audio streaming
iv. reporting
v.  RSS feeds
vi. site search
vii.    forums
viii.   podcasts
ix. Flash
x.  CMS:  looking at using Percussion Software
xi. PII registration 
xii.    tie into SF.com (Sales Force)

They also want to have a pre-prod server available so they can test the website before going public with it. This may just be a matter of paying extra for another site/server.

Thanks for the help.