Source Code was very engaging and entertaining...
I found myself thinking about it well after I left the theater, which is rare for a movie nowadays...
sure, there were a few holes in the logic, but that's to be expected for a movie of this type...
closest movie I could compare it to, in terms of concept and execution, was Inception, which I didn't think worked nearly as well...
Source Code was one of the few 2011 releases I'd give a solid thumb's up...