Can I use two 27" Cinema Displays from a 15" MacBook Pro? I am interested in purchasing a MacBook Pro and running multiple monitors when I am at my desk. Ideally, I'd like to run two 27" Cinema Displays when I am working at my desk, but would be okay with two smaller monitors.

Is this configuration possible? Does it require a combination of both Thunderbolt and DVI connectors?

I am aware that there is a similar question about utilizing multiple monitors when using the MacBook Air, but didn't feel like it gave enough detail about MacBook Pros.
If you are talking about a Thunderbolt equipped 15-inch MacBook Pro then yes according to this:

Apple Thunderbolt Display (27-inch): Connection options for Thunderbolt Macs

Interestingly you can also drive two from a 13-inch MacBook Pro, it will disable the built in display.