there is a SSh client out there for the G1... connectbot I think..
I wish I could find a easy to use and running telnet application I know people are like but dude zaTelnet Light is out there.. but all I can find on the
http://www.zatelnet.com/gphone/main.php is the source code and lack the time and knowledge to compile it into a working .apk
A good Zmud client. Theres been tons of tims I wish I could mud.
Etch-a-Sketch program using the trackball and then shaking the thing to erase.
PDF viewer that would be as simply as clicking and dragging a pdf to my SDcard and reading it on the phone. Preferably with a zoom function like the chrome browser.
The ability to read webpages stored on the SDcard with the browser. I do my own html at times and being able to view and edit would be nice.