I don't think it was called mission control but it laid out all OPEN (as opposed to only open windows in Lion) apps and it didn't stack windows on top of each other like Lions Mission Control:
How can I get it to display a window for every OPEN app I have running instead of the apps that only have current open windows.. and also how do I set it to layout all the windows like the 'old' way? I don't like it overlaying everything like that. (It gets way more confusing with more open windows)

How can I get it to display a window for every OPEN app I have running instead of the apps that only have current open windows.. and also how do I set it to layout all the windows like the 'old' way? I don't like it overlaying everything like that. (It gets way more confusing with more open windows)