As anyone who knows me will (tiredly) attest to, I really like my powerbook. One of the cooler things about it is probably the sleep/restore feature. When I close the lid, it turns itself off immediately. Even if I leave it on standby overnight (which drains about five percent of the battery), when I open it up again, it'll go from totally dark to ready-to-type in two seconds.

This, plus the fact that OSX is really pretty solid, means I don't have to turn the thing off. Ever.

[worlds:~] cmiller% uptime
 8:29PM  up 3 days,  6:27, 4 users, load averages: 1.01, 0.58, 0.45

Three days uptime. If I remember, that's because I forgot to plug it into the power at work on Monday and the battery went flat. Not at all bad for a laptop.