SpeedTest.net
Tests: Ping, Download, Upload
Worldwide server choice
http://speedtest.net
(surfing to with Android mobile prompts you to d/l the speedtest.net app)
Speakeasy.net
Tests: Download, Upload
8 selectable US servers
http://Speakeasy.net/speedtest
AT&T
att.com/speedtest
(powered by Ookla, SpeedTest.net)