If we're going to discuss hypocrisy and general bad behavior on the part of the GOP, we have to get the details right. There are some inaccuracies in your description of Newt Gingrich's marriages and treatment of his various wives.
Newt Gingrich has long absolutely appalled me, but there are times when he commits his sins one at a time, not in combination, as you suggest in your description.
It's common knowledge that Newt Gingrich has been married three times (at this writing), that he has been unfaithful, and that his divorcing of his first and second wives was reportedly rather cold-blooded. But you've made a composite of a couple of wives. It's Gingrich's first wife who suffered from cancer. It's reported that Gingrich wanted to discuss the terms of their divorce while she was hospitalized, but this took place in the 1980s, not, as you suggest, during impeachment.
Gingrich reportedly carried on an affair with a younger woman (an aide, not an intern) during his second marriage and eventually divorced wife number two for the third. That did take place near the time of the Clinton impeachment.
There are loads of resources on the Web that cover this. I just don't want us to get like those e-mailing maniacs who send urban legends around to unsuspecting friends and family.
http://en.wikipedia.org/wiki/Newt_Gingrichhttp://www.answers.com/topic/newt-gingrichhttp://www.pabook.libraries.psu.edu/LitMap/bios/Gingrich__Newton.html