There's a reason I talk about marketing automation last. I can go to Home Depot and buy power tools -- that does not mean I can build a house. So too marketing need great processes and content matched with customer buying processes. Nothing replaces the need for content and processes.
That said, marketing automation plays a key role. Tracking digital body language and sharing the right information with the right person at the right time is possible due to automation. The marketing database needs to be accurate and should live in marketing automation.
Our partner is Marketo and their product ties directly into Salesforce.com and has a new and very powerful capability for sales.
I also wish to mention another partner with tight integration with Salesforce.com, InsideView. InsideView gives deep insights into buyers and trigger events.