[Brody]

I'm pretty happy with the free-form approach of the pose and @emit commands in PennMUSH - but this is for very specific codebases, generally intended for RP-heavy games like mine:

Pose:

Input:

:does whatever he's doing, while his moose antlers wave in the wind.

Output:

Brody does whatever he's doing, while his moose antlers wave in the wind.

@emit:

Input:

@emit As his moose antlers wave in the wind, Brody does whatever he's doing.

Output:

As his moose antlers wave in the wind, Brody does whatever he's doing.

The pose command just tacks text onto your name. The @emit command lets you shake things up, move phrases around, and avoid the repetition of your name at the beginning of every line. It also allows for the use of atmospheric emits and NPCs.