MS Office- installs its own fonts without asking, and puts them where it puts them. Very obtrusive for people who like to HAVE CONTROL OVER THEIR OWN FONTS!!!. Werr. Had to manually remove them and put them where I keep my other bazillion Suitcase fonts.
Edit: It's also not smart enough to know if you've already got a version of the font installed, (which I did have, most of them) so you keep getting font conflicts and duplicates in Suitcase.