In addition to my perhaps unprofessional weakness for playing games, the huge win for me is that it slashes boot times for hefty programs, most noticeably the VMs that I do all my development in and, of course, browsers. Chrome boots practically instantaneously -- I often have to wait for my wireless to come up so that it has something to do right after a system boot.
My other suggestion, which combos well with SSDs and is ridiculously cheap to implement these days: get more memory. I have 8 GBs. If there were a convenient option for getting 16, I'd be all over it -- I never find myself thinking "Dang it all, I have too much stuff in memory, why don't I page out some to disk".