I hated the mac's keybaord and mouse - but it works well enough with my logitech mx700 mouse & keyboard.

I still dual boot OSX and Vista (soon to go back to XP) but have to say the biggest "find" was google bookmarks (part of the google toolbar).

Once I installed that, my bookmarks travelled from PC to PC, as well as accross OSes when dual booting.

A simple thing, but made a huge difference for me.