I know they have VNC, SSH, etc, and those are all incredibly useful, but they just released Remote Desktop Lite for the iPhone. I use a PC for very limited tasks, so Remote Desktop for those purposes are great. In fact, I blogged about switching from Parallels back to Remote Desktop, due to speed.

But now I can do the same thing, just smaller, on my iPhone. Here are screen captures of the program and me using my PC on my iPhone:

The Start Screen for the Program:
Remote Desktop on iPhone

My PC's desktop, I zoomed out by pinching:
Remote Desktop on iPhone

Zooming in on IE on my PC:
Remote Desktop on iPhone

Typing with the keyboard on my PC:
Remote Desktop on iPhone

This phone can really do everything, it is just amazing.