In wave you would often like to show some code to get some feed back on it. A gadget which can help with it is wave code prettifier by Milan Andrejevic . It is a gadget you can put into your Wave and you can then get formatted code in your wave.
The code gets highlighted as you type. The language is determinate automatically, or you can overwrite the control.
For this week there has been some interesting Wave blogs.
SAP Research in Brisbane had created a screen cast of their first Gadget. A gadget where people could collaborate on creating a process model. After the collaboration was done it was possible to export the process model and implement the model in SAP BPM. The screen cast show how complex gadgets can be and how they can assist with the collaboration. Also see Richards Hircsh response, which contains some insight full comments about the status.
Eye on FDA: Google Wave, Part 2 Examples on how Wave can be used in the pharmacy industry to help in some of the processes they have. It is always nice to get some concrete examples on how Wave can be used to help organizations.
App Engine SDK 1.2.5 released which is not Wave, but has some very interesting perspectives for Wave. It supports XMPP, which could mean that it is possible create wave clients/servers on Appengine.
I found the youtube video embedded below on, it is rather old now. It contains some interesting facts. 50 enginers in Google working on Wave. Make sure the protocol is open. Takes 2½ half year with the first wave application, but they hope that other groups will implement servers faster. Google compliments Twitter, and are working on ways to integrate twitter closer with wave.
Björn Wibben has created a blog about using jQuery in gadgets it looks quite interesting.