I like the new Data Flow Source Assistant in SSIS Denali. The default view is shown above, with the "Show installed only" checkbox checked. When not checked, the list of Source types changes:
In previous versions of SSIS, I rarely created connections in the Connection Managers pane - I usually hit a New button in either a Source or Destination Adapter, or in a task. It was just easier letting the task or adapter pick the proper Connection Manager editor.
This is handy and a time-saver.