A warning to everyone. Do not use Visual Task Switcher!
I just spent 1/2 an hour trying to get my phone screen to show up because of it.
Here's what I did.
1. Played around w/ various launchers (d/l Launcher Pro and ADW).
2. Downloaded Visual Task Switcher (seems cools, reminded me of Pre).
3. Didn't like that it took over the home button, went to settings to change it to home long press instead. Worse idea I ever made w/ Android OS thus far, and I rooted w/o any problems!
The phone screen went black after I tried to switch the home button to home long press. The keyboard is still lit so I know the power is still going. But unlike previous crashes, where the screen eventually come back. This time, it never came back. Tried removing battery and putting it back in. No dice. Tried Hard Reset (hold Vol down and press power), didn't work either.
I finally found a factory reset function (not sure the diff w/ hard reset), which finally restore the screen and gave me a few options (reset, wipe cache, wipe data). Wipe cache did nothing, so I had to wipe all my data too.
Stupid of me not to use Titanium Backup after I rooted. I cared more for the wifi tether, but the backup would have come in real handy.
Oh well, just to let everyone know what I experienced. YMMV, but I will stay away from the launchers and task killers right now. I only wanted to mess with the launchers because I wanted to resize the task manager widget from 2x2 to 1x1 but there's no way to do that since if you don't use TW, you don't have that widget anyway.
P.S. For Factory reset, hold vol down, camera button, and power button until the Samsung logo comes up.