This should of been created a long time ago. While this is the first "official" 6.x according to the release system, Coder was one of the first modules upgrades to 6.x, and has been working for some time. I'll do a better job of releasing versions, so you will now know when there are updates to the rules.
You need to download the jcarousel source code and extract it to the modules folder.
Providing a jcarousel block which can be managed throught the admin/build/block.
No need to write any HTML or including any JS. Just put the block to 'content' region, and configure it shows only at path 'node/*'. If you have pathauto alias pattern like content/type/*, you can show this block only at certain types of nodes.