It is indeed Guinea Pig, Figured to use the second as it is the most well known of the series but Damn, i thought that mine would last longer than 9 minutes, Should have used a scene without the samurai in it. It still remains the only movie to ever make me want to puke.
No idea on what movie that is, but i think i saw that lady (the one behind the outstretched arms in Jack Frost as the lady who gets hung on the tree.