In Eclipse I was able to register a set of classes for static import auto-completion, e.g. Math., Assert., EasyMock.*
With this enabled I was able to hit ct
If you're using IntelliJ 10, try the following:
assEq
Accepting a suggestion from the resulting popup list will, by default, insert a ClassName.methodName() reference (which you can convert to a static import using an Alt-Enter intention).
You can also insert a statically imported method from the completion list by choosing "Right" in the completion menu, and selecting "Import Statically":

Note that once you've statically imported a single method from a class (Assert.assertSame), other static methods from that class (like Assert.assertEquals) will be included in the "regular" code completion (Ctrl-Space).