I thought Soldier rocket jumping was pretty weak, until I saw it done properly:
http://www.youtube.com/watch?v=tqGc7g2hBwQ
Dude says to crouch->jump->fire for much better heights. He's able to rocket jump from the ground to the C cap on Granary. That's pretty high.

If Soldier rocket jumping is decent, demo gren jumping is totally off the hook.
http://www.youtube.com/watch?v=sXNloamvcoM
At one point on 2Forts he gren jumps across the moat and onto the opposing deck with one jump. Craziness!

Finally, here's a great resource for some script snippets.
http://tf2wiki.net/index.php/Community_Scripts
Also, please look around that site. I've already updated some Engineer info, and written this section on 2forts:
http://tf2wiki.net/index.php/2fort

Cross post, but care of Warmfuzzy and Mr. Pinstripe we have our own pub TF2 server! You guys rox!

g13.warmfuzzyland.com:27015

So lets get this shit going. I am all down for setting up times we can all play together on the WFL server. Post what times work best for you.

Wed Fri Sat and Sun- from 8-10pm for me