Eclipse Spy: Enables you to get information about what kind of e.g. window you are looking at in eclipse. This is useful if you be your self are developing plug-ins for eclipse. To invoke Eclipse spy:

An other blog post about Eclipse 3.4 Hidden Treasures can be found at http://eclipse.dzone.com/articles/eclipse-34-hidden-treasures
Eclipse shortcuts: (source)
- quick outline: ctrl + o
- open resource: ctrl + shift + r
- open type (class, interface etc.): ctrl + shift + t
- go to line: ctrl + l
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Eclipse