What is your favourite syntax for including a plugin on a page?

[Knitter]

I don't really like any of that, why do I need another language, and whatever plugin syntax you choose you're creating a new language, to produce output that PHP can easily produce?

If you're thinking of template system, there are already a lot of them that can be used, why invent a new system? If it's not template related why do I need such a syntax?

I tried the contact plugin that's more recommended around here and the syntax is just strange, why use something like (% contact %) when I can just instantiate the contact object, set it up and call some method on it that shows the contact where I want?

What is the real, measurable, advantage that using such syntax/system offers?