Apple broadband tunerPosted on 30 Nov 2005.
I know this has been posted to every Apple blog on the net, but in case you missed it already: Apple has released a small app that sets the TCP window parameters higher.
Or, in plain English, it makes broadband connections faster.
I've installed it, but need to test and see what the results are. From results like this you can see that TCP windows are critical:
(Image borrowed from http://www.psc.edu/networking/projects/hpn-ssh/)
Gotta love Apple sometimes.