advice for a switcher?

so, i'm about to be a switch for the first time.[1]

which is to say, i've got a macbook on order that should be arriving in a week or so, depending on vagaries of fedex ground and such.

i realized that nearly all of the things i do with my laptop are platform-independent (mostly web and ssh, really, plus watching media and such), so it was a reasonable time to look at getting a macbook for my new laptop.

i've heard good things about quicksilver. what else should i keep an eye out for free/share/cheapware?

[1] no, not like that, you perverts