The weirdest thing about the Force I have read in the EU would be the ysalamiri (sp?). Which really didn't bother me at all when I first read about it, though now I am not so sure how I feel about it. Other than that, it has always pretty much followed the OT's explanation of the Force. Although, long before the TPM, the EU has also expressed the idea that some are intune with the Force, and others are not, thus a Jedi is not something just anybody came become, but only those who possess an ability to use the Force, which the EU often seemed to indicate was passed on genetically.