But you can still run AppleScripts from your Objective-C code; using the tips above.
(This flexibility is a good thing, you can use Cocoa, Carbon, AppleScript & Unix shell scripts all in one application).
Coming is leopard is Script Bridge which has got to be one of the most kick ass things to happen to AppleScript since... hmm... its creation
/wrote code to build and send applescript commands
//Page and a half tell the scriptable text editor to turn a few words red.
///In MacApp 2.0 --Object Pascal FTW
////Its no easier in Carbon